im pregnant and i dont want to be...

I started a antibiotic for a UTI i had and my dr never told me it would cancel out my birth control so i was having unprotected sex with my boyfriend. As soon as i found out that i could get/be pregnant i took a some tests and they were all positive. I struggle with depression, anxiety and PTSD and dont feel like i can mentally handle a pregnancy right now. My boyfriend feels the same way i do in that neither of us are prepared enough to give a baby the life it deserves. I cant afford an abortion and i cant tell my parents whose insurance im on, that im pregnant or theyll make me keep the baby. This sounds awful but is there any way to force a miscarriage as soon as possible? (Im currently 20 years old)