My tubes have been clamped since April of 2011 I had my period a week and a half ago and since then I have had a watery white discharge and my breast have been very sore I have to eat every two hours or I feel dizzy and sick and I have to pee a lot the only time I have felt any of these was when I was pregnant could I be pregnant

There is always a very slight chance, yes. You will just have to test. There are newer kits that can be used sooner, but you might want to buy a few and space the testing every 4 or 5 days.
On the other hand, you could just be experiencing middleshmertz, ovulation symptoms that many women feel quite often. No one can tell which online.