I have been extremely tired for the past 3 days, can barely function. night before last I was having…

I have been extremely tired for the past 3 days, can barely function. night before last I was having aweful period like crams with pain in my lower back. took a shower things got worse. yesterday was fine till about 2:30 and same thing happened but my back hurt so bad I couldn't get up off the couch an starting about 6 o'clock last night I've had this aweful pressure and an extremely sharp pain inside my vagina, it would literally take my breath away, I couldn't move or talk or anything. I went to bed and it seems fine at the moment but I'm so tired I fee like I haven't slept in months. is this normal?