Hi Milly,
Asprin can help but as the others have said, only when there is an underlying condition that asprin can be associated with helping such as those that have symptoms of clotting (eg antiphospholipid syndrome).

There is much that is no known of why asprin or other anitcoagulants work to assit with implantation or preventing misscarriage, and so I would recommend seeking advice from a specialist eg FS prior to taking any meds as the dose and lenght of time to take the treatment can differ depending on why you need to take it. For example I tested positive to ANA antibodies and was on heparin injections till I was 20wks preg, and was on asprin prior to our transfer and will stay on it until 1week prior to my babies birth (will be induced about 38wks). In contast, some people just take asprin for 12wks and some people take heparin for up to 30wks (or even more I think).

I guess my point is that without specialist advice, you dont know 1. if asprin or a similar drug will help or 2. for what period of time you need to take the treatment.

It would devestating to self medicate with asprin, fall pg and then probs to arrise later if you were to stop the treatment too early.

Good luck.
FG