My husband and I are trying to get pregnant. I was on Depo Provera for about 5 years and recently stopped using it. I had my first period in 5 years in July. It was normal. My next period was supposed to start on August 26th and here it is the 29th and no period. I took a pregnancy test on 8/26 but it came up negative. I have noticed that for the last few days that my nipples are extremely sore. Some people say its an early sign of pregnancy other say PMS. How do I know? Thanks.