Hi, im 19 years old and my boyfriend and I have sex a lot and a lot of the time I mess up taking my birth control. My periods are usually right on target. I started my period on april 14 (almost 2 weeks early) but it wasnt like my normal period. It only lasted 2 days and it wasnt heavy at all. It started out pink and then went to a brownish color. Ive been having head aches and nausia. I havent thrown up or anything yet, but it is worst when I wake up and then the nausia goes off and on during the day. I usually feel like throwing up, but it hasnt happened yet. My breasts are kind of tender and my veins are really starting to show in them. I feel like they are getting bigger as well. I know it is early, but my body feels weird. Ive been tired lately and I switch off and on with what I eat. Some days I will eat everything while others I eat nothing. I just dont feel myself. Could I be pregnant? I took a pregnancy test a week ago and it was negative, but these symptoms just started showing up in the past week. What should I do? When do the home pregnancy tests start to work/ how long should I wait to take another one?