Wow, 11 tests? Lol well, I think it's probably pretty safe to say that you are pregnant, and you should eat and live like you are while you're waiting on your doctor's appointment.
The symptoms are different for everyone. I was 2 months pregnant before I knew, and I had felt fine the entire time. From what I have read, the cramps could be from implantation. Unless you're bleeding or they're really intense, I wouldn't worry about them.
Good luck!