High bp instructed to take baby aspirin

So I had my nuchal scan today I’m currently 12+6 days and they took my bp like as soon as I walked from the bathroom and it was 143 over something I can’t remember the bottom number. I had preeclampsia in my first pregnancy and my doctor instructed me to start taking baby aspirin this time but I’m so worried about taking a medication like that for my entire pregnancy. Has anyone taken baby aspirin your whole pregnancy and baby turned out to be ok?