Hi, 3 weeks ago had unprotected sex, I am on birth control however the day I had intercourse was the day after my last period. I have been experiencing mild cramping and feeling in my lower abdomen, experienced excessive sleeping and fatigue and mood swings. I have taken a test and it was negative. I read that it might be too early for a test and I have about 9days before my next period. Is it too early to tell? I've never experienced period preparation this early before... And I had a miscarriage last year but that time I wasn't experiencing any changes until 2 1/2 months...any suggestions?