I am 19 years old, I am 5'3" and I have quite a bit of muscle for my size. I have had regular periods since a miscarriage in september, I recieved a Rhogam shot due to my negative blood type. In December I had a period the bleeding lasted from december 18th-Jan. 4th. I had unprotected sex once in Dec. before my period and once in January after that long period. Haven't had a period for January, Feb. and March. I went from a size 7 to a size 10 in pants in that time as well as up a cup size so i had to get a new bra. I stepped on the scale at my b/fs house the other day and it said I weigh the same as I did around christmas time(133lbs). The home pregnancy tests show neg. What is going on?
http://tinypic.com/view.php?pic=2rm61vo&s=5 (before and now)