Baby aspirin need advise please

charity

Ok everyone I need advise please. Have had a huge hiccup with medical insurance and waiting. Heres my worry, I cant get to the doctor yet and I had preeclampsia last pregnancy with seizures. I have heard that doctors start women on baby aspirin at 12 weeks to help prevent or lessen the preeclampsia risk. Would it be safe for me to start the baby aspirin now without doctors consent, I am 15 weeks. What would you do if you were me? Already tried the er and no luck with getting a doctor to prescribe it.