2 weeks ago from today I threw up less than an hour after taking my low-hormone birth control pill. I didn't think anything about it until Thursday when I was supposed to get my withdrawal bleed, so I never took a makeup pill. I had cramps and was expecting to get it, but nothing came until Friday. Then I only had some inconsistent brown, pink, and some bright red spotting.. not even enough to soak a pantyliner. I normally have fairly heavy withdrawal bleeding that last 3 days and go through about 6-7 pads, and this only lasted a day. Now, I am very emotional, tender breasts, constant headache, fatigued, food cravings, and feel nauseous. I took 2 pregnancy tests that came out negative when I was spotting, and I later found I have to wait atleast 19 days to test from missing my pill. That being said, I'm not quite sure how pregnancy works with the pill... could I be pregnant? If so, what would the symptoms be since I'm on the pill?