PanicStation.org
UK USA
uk Health & medical scares bleeding in pregnancy • vaginal bleeding while pregnant • spotting when pregnant • brown discharge in pregnancy • one sided pain in pregnancy • one-sided pelvic pain pregnant • one sided tummy pain pregnant • persistent abdominal pain pregnant • bleeding and one sided pain • dizzy or faint pregnant • shoulder tip pain pregnancy • cramps with bleeding pregnant • early pregnancy bleeding scare • pregnancy pain that won’t go away • worried about ectopic pregnancy • bleeding after positive test • bleeding in first trimester • bleeding later in pregnancy

What to do if…
you are pregnant and notice bleeding or persistent one-sided pain

Short answer

Get same-day medical assessment. If you have bleeding plus persistent one-sided pain, or you feel faint/very unwell, seek urgent help now (call your maternity assessment/triage or early pregnancy service; if you can’t reach them quickly, call NHS 111; if severe, call 999 or go to A&E).

Do not do these things

  • Do not “wait it out” overnight if bleeding continues, pain persists on one side, or symptoms are getting worse.
  • Do not drive yourself if you feel dizzy, faint, weak, or your pain is severe—get someone to take you or call 999.
  • Do not use tampons, menstrual cups, or put anything in the vagina right now (including “checking” internally).
  • Do not take ibuprofen or other anti-inflammatory painkillers unless a clinician has told you they’re appropriate for you in pregnancy.
  • Do not rely on a home pregnancy test, internet searches, or past experiences to decide it’s “definitely fine” or “definitely a miscarriage” without being assessed.

What to do now

  1. Quick safety check (decide “999/A&E now” vs “urgent call”).
    Call 999 or go to A&E immediately if you have any of these: severe or sudden worsening tummy/pelvic pain, shoulder-tip pain, heavy bleeding, collapse/fainting, marked dizziness/weakness, trouble breathing, or you look/feel seriously unwell.
  2. Contact the right UK service for same-day advice.
    • If you’re already under maternity care: call your maternity triage/assessment unit (the number is often in your booking info/texts).
    • If you are early in pregnancy or not yet booked: contact your local Early Pregnancy Assessment Service / Early Pregnancy Unit if available.
    • If you can’t reach them quickly or you’re unsure where to go: call NHS 111 for urgent direction to the right service.
  3. Use a pad and track what’s happening (for clinicians).
    Put on a sanitary pad (not a tampon) so you can describe the bleeding. Note: start time, colour (bright red/brown), whether it’s getting heavier, and whether you are passing clots.
  4. Rest safely and don’t be alone if you’re lightheaded.
    Sit or lie on your side if you feel faint. Ask someone to stay with you. If you need to travel, bring a charger and don’t go alone if you’re dizzy or in significant pain.
  5. Prepare the key info they’ll ask (1–2 minutes).
    • How many weeks pregnant you might be (or date of last period/positive test)
    • Where the pain is (one side? shoulder tip?) and whether it’s constant or worsening
    • Any previous ectopic pregnancy or tubal surgery, IVF, or pregnancy with an IUD in place
    • Your medications and allergies
  6. Pain relief only if you need it and it’s safe for you.
    If you need pain relief while arranging care, paracetamol is generally the first-choice option in pregnancy when used as directed. Avoid other pain medicines unless a clinician advises.
  7. If you are RhD negative, mention it—then let the clinician decide what’s needed.
    If you know you are RhD negative, tell the clinician. Whether anti-D is needed depends on things like how many weeks pregnant you are and the pattern/amount of bleeding (it’s often considered after around 12 weeks, or with heavier/repeated bleeding or abdominal pain). If you don’t know your blood group, don’t worry; they can check.

What can wait

  • You do not need to decide what the bleeding “means” (or make any decisions about the pregnancy) right now.
  • You do not need to search for causes, compare stories online, or measure blood loss precisely.
  • You do not need to contact work/sort childcare until you know where you’re being seen—focus on getting assessed.

Important reassurance

Bleeding can happen in pregnancy for many reasons, and it is not automatically a disaster. But bleeding with persistent one-sided pain is a pattern clinicians take seriously because a small number of causes can become dangerous quickly—getting checked promptly is the safest move.

Scope note

This is first steps only: how to get you assessed safely and avoid common panic mistakes. Any tests or treatment decisions should be made with a UK clinician who can examine you.

Important note

This guide provides general safety information, not a diagnosis. If you think you may be in immediate danger or you are becoming faint, confused, or severely unwell, call 999.

Additional Resources
Support us