I am not sure if I am pregnant or not. I had sex on or around the 7th and I started to bleed on the 18th7th it was for about 4 days and it was irregular. I always have a heavy flow the first two days but it was red at first then less and less till day 4 and was no more. I've take 2 test since the on different days both negative. But on Monday morning I threw up once. None since then. But I'm always hungry my stomach looks larger and when I do eat I never feel full and I get up in the night to eat. Maybe the tests are too early I duno please help.