I didn't have a normal period in August. The only kind of bleeding I had in August was on the 12th and it lasted 2 days and extremely light..spotting where all I had to do was wear a panty liner for those two days. My last normal period was in the beginning of July.
After I had that light 2 day spotting in August I took two preg tests and one came out a very faint (but visible) pos. and the other came out neg.
According to the doc going by my due date I should have had a period around Aug 1st and I didn't. Matter of fact, my bf and I were having sex quite a bit that whole week of Aug 1. I had no bleeding that week at all early August. I didn't have anything till the 12th when I had the spotting.
And yes, my periods are always normal, lasting 6-7 days and came regular every time with the exception of the month August when I had that two day spotting and NO period, or what I'd call anything normal as far as a period goes.