I've only had my period one full week and couple small bleedings that are only noticeable after going to the bathroom...a little pink on tissue. I haven't had sex in over 2 years and I only took birth control a month after giving birth (2 years ago). I dont really go out much and the last time i went for a long walk is when i got the period that lasted a full week. Before I was pregnant i always had periods that would last 4 days. The year before i got pregnant my period started coming every other month and lasting about 4-6 days. Whats going on?