I was supposed to start my period on Sunday, 9/23. Usually my periods are regular and very heavy... My husband and I have been trying to conceive for about 2 months now and as Sunday arrived I was waiting to see if my period came... Well, in the middle of the day I went to the bathroom and found spotting. I have been spotting very little for about 5 days now, I took a pregnancy test but it came out negative... Any suggestions of what could be happening?