No, you shouldn't take aspirin if you have:
any known allergy, intolerance or contraindication to aspirin or non-steroidals (NSAIDs)
active stomach or peptic ulcers
current kidney or liver dysfunction
recent history of heavy vaginal bleeding (e.g. within the past 1 week).
If you are unsure whether any of the above apply to you, discuss with your doctor or community midwife before taking.
Aspirin is available over the counter at any pharmacy or supermarket. Alternatively your doctor can issue a prescription. The correct dose is 150mg at night between 12 and 36 weeks.
If you have any further questions please speak to your community midwife.