I am 36 years old,i have gained weight in my stomach alot ,my hips and my butt. i am still having a period each month.i have these bad headaches that has been going on for 2 weeks,i have had a neg. pregnacy test. i am even feeling movement in my lower abdoman area.i do have frequent urination. with my first child the same thing happened, i still had my period foralmost 6 mon. and had neg.test and ended up pregnant. im having the symptoms ,but im still having negative test. what should i do.