I have had my cycle for 6 years now and it is always 4-6 days long (I keep track) last month I only had my period for two days and this month I have only had it for 2 days again. The first day was a full flow and the second was spotting of pink and brown. I had normal cramps but I have been unusually tired for a while now and I always have to pee. I haven't changed in weight, I've always been a person who eats a lot so there isn't much change there. However I have been extremely moody... help anyone?