Just venting..

I've been cramping for over a week now like my period is going to start and it feels like it is, had the smallest bit of sporting today then nothing. Saturday I will be a week late, I highly doubt I am pregnant, we're not trying but also only use withdrawal. I took a pregnancy test today and it was negative.. I literally have no questsions, just venting. I want a baby now but my husband doesn't want to start trying until September, but it is so hard to think I could be and know I probably am not. : (