I was given baby aspirin today at 13 weeks, as Ive had a couple of chemical pregnancies. I really don't want to take it, Im scared it will harm the baby even though she says it can help thin blood. Ive had no tests to suggest I have a blood clotting problem and never had one, nor does it run in my family. Should I take it? Am I just being silly? Anyone taking it now? Im 13 weeks, so ive past the chemical stage, so is it still necessary?