Worried!!

I've been on the pill for roughly ten months. (The 28 day cycle kind with three weeks of horemones and one week of placebo pills at the end of the pack.) While I've been on them my period was regular until three almost four months ago. I bled practically for three months straight with very few days of not bleeding in between. It's also been very painful in my uterus but not like cramps, it's a dull but extremely persistent pressure but it's mostly only there when I bleed.I went to the doctor to eliminate some possibilities. They ran a lot of different tests, one of which was a pregnancy test and at the time I wasn't pregnant. (This doctor visit was in June.) They didn't do anything for me and I continued to bleed. Three or four weeks ago my boyfriend and I had some protected and some unprotected sex. I've been on the pill for a while now and we've gone raw a couple times before so we figured this was okay? I was still bleeding when we hooked up. I went to a different OBGYN this last Monday (July 18th) about my bleeding. They didn't do any examinations or tests at all because they're getting the lab data from my visit at the other hospital transferred over. I haven't bled since Monday which is odd since I've been bleeding all of the time. The day after my visit with my doctor I started a brand new packet of pills and took one in the morning and one at night for five days. (Doc's orders.) The first day I did this I threw up in the middle of the night multiple times. I've been nauseous on and off every day since even though the last day I had to double up was Friday (July 22nd). I've been taking my pills once a day on a regular schedule since then. It's really difficult to pinpoint any sort of problem with my period being so irregular..but my fear is pregnancy considering I stopped bleeding before the doc even had me do anything crazy..and the nausea which maybe was from doubling up on the pills..I've also recently been breaking out around my chin which is odd as well because I don't typically get acne. I'm exhausted constantly. My boyfriend and I are both 16 and not ready to have a child yet. Him and his family are very religious, his parents love me but would not be sympathetic or understanding at all and my parents are huge hypocrites and would also not be helpful. Talking to them about it is not an option, I would most likely be thrown out. Do you think I'm pregnant? And if so what are my options? Please comment and share your opinion. Thank you!