I think you are probably pregnant. Take a test!! Go ahead...it will make you go crazy like the rest of us. Haha....you could get a blood test...that will show for sure...then you dont have to worry about if the HPT was right or wrong. If you get a blood test get a qunatative one not a qualatative one. Good Luck!
I'd wait a few more days and take a test. Your AF might be a few days off. It's hard sometimes to determine pregnancy from just plain ole PMS. The symptoms are so much alike. But other times, a woman just knows when something's not right. Follow your instincts... if you feel like your body's just not right, take a test... Best of luck!