What Causes Yellow Vaginal Discharge Post Unprotected Sex?

I had a medical abortion when i was 8 weeks pregnant. That wast last December 2 2014. I had 15 meds then. 1 mifepristone, 4 misoprostol and 10 methergine. I started to heavily bleed when i inserted 4 misoprostol vaginally. after a week, i got drunk and had unsafe sex. my bleeding lasts for 2 weeks then, but after a week, i had an on off heavy to light bleeding. And today, January 16 2015 ive been experiencing a yellowish vaginal discharge. I havent gone to a nearyby hospital yet since ive done the abortion. Is there something wrong with me? Im only 17 please help me. Thankyou