So I'm 17 and me and my boyfriend had sex in January (unprotected) but I'm on birth control. I can't remember if it was later that month or February that I was days late I did end up getting a very light two day cycle. But since then I've had no cycle and it is now April. I'm worried that I might be pregnant. I've been craving Chinese food here recently but no really sickness but my breast have been tender and they've grown ALOT. I had gotten what I think was the 24hr stomach bug the rest of my family got it too but my nausea just haven't went away like the others. I'm tired when I get home I am ready to nap. But here lately it's been feeling like I've been having gas bubbles or something nudging me I'm not a skinny person so I'm not sure what it is.