My period is normally 5-6 days long. The past two months it has only been 2-3 days long with mostly brown, but still some red, blood. It has also been very light. I've been feeling very nauseous, gassy, bloated, irritable, moody, and very tired. I had severe cramps last month for about a day, but none this month. I took a pregnancy test two weeks ago, but I'm thinking I took it too early, maybe. It came out negative. I'm always hungry, but I can't eat very much. It's like I can eat half a sandwich and be full, but one or two hours later, I'm starving. My boyfriend always uses a condom, and it has never broken. Two or three times we started without a condom, but then he puts one on after maybe two minutes. Should I take another pregnancy test, or could this be something else?