Whats normal?

Nicole
Me & my husband has been trying to have a baby for almost a yr. now & I thought that this might have been the month that it actually happened b/c I missed my period. It was 4 days late which it never is it always comes 2 early every month. 2 days ago I started having very light cramps & last night I had a brown discharge & this morning its like a med. period with small blood clots. Im not experiencing any cramps or pain of any kind which is typical with my periods b/c when I have my period its really bad & I have to miss work b/c I hurt & bleed alot. I did some research online & some said its normal but then others says its not. Im scared to death & I was wondering if anyone else has had this happen