TRying to Concieve...

My husband and I have been trying to concieve for 2 months. I am do for AF on Friday March 6th - I have severe cramping on Sunday followed by brown discharge on Monday and a little today. (I normally get this before my period but weird thing is it completly stopped and usually is followed by my period) think its AF? Took a test 9days and 6 days ago and bother were negative know its prob to early...