Hi, I normally the first 3-4 days out of 7 days have a heavy periods flow with mild to painful cramping my cycle is usually like clockwork 30 days. This has been consistent for the last 6 months. This month it changed drastically, to very light period, very bloated. I had sex 1 time, but it was 2 days before my period was supposed to start. I am over weight, and in my early 30s.