After I had my daughter on 3/31/11, I didn't start my period until June 20.

My cycle was 38 days for my second one. I ovulated on 8/20, and I had intercourse on the same day. Then when I put my underwear on, I saw some blood and thought that I was on my period again.

After a few days I spotted; started to have a mild cramp on one side; sometimes even both sides. I spotted for a couple of days. My expected period is 9/3. I have tried a home pregnancy test three times before my missing period.

During the spotted days, I was having backache. And I can see that my uterus is different now. I've been searching for some answer but it doesn't seem to satisfy me at all.

I need help and answers, please.