So I've been feeling sick all day everyday, cramps, pelvic pain and lower backache everyday for the past 3 weeks... I havent come in my period yet but I'm not sure when I'm suppose to. Normally I have one every 28 days BUT I was on beginning of January then again 2 weeks later so I havent got a clue as to when i should be. I've done one first response test and it came back negative but I dont know if it's because I've tested too early or if I'm just not pregnant... any ideas?