Has anyones doctors recommended they take baby low dose aspirin to prevent preeclampsia from reoccurring?

mine has. he suggested I start taking it immediately in my pregnancy. now I'm coming up on 36 weeks, and I just ran out.

I want to know if the doctors have suggested when to stop taking it?

cant it cause more bleeding or something? I dont want to buy another bottle if at my next appointment, he tells me to stop taking it.