so i took a pregnancy test about a month and a half ago, i took 2 and both were neg.(havent went to the doc. because i didnt think i was preg.) although they were from dollar tree, about a week and a half after i took them i noticed i started gaining weight, ive weighed 154 for the past 6 yrs, and now i way 163, withing a matter of a month, had my period last month lasted 3 days, ive been eating alot less then i used to, i eat dinner about 5pm , and then maybe some chips or something in the evening, also i keep having some sharp pains every once in a while and feeling like a twitching or spasm to the left of my bellybutton, when i took the preg. test in the beginning i took it because i was have bad cramps and back pain like pms but i wasnt, also been super tired, sleeping later then normal, but my breasts havent been hurting or anything, but my stomach always feels swollen i used to sleep like rolled in a ball which i cant do anymore, and most of the time when i get belly pains its at nite not morning, Has anyone had this stuff happen? what could it be? could i be preg.? please help me..