HAHA! It can be normal.
I had the worst possible pains when I was about 28 weeks pregnant with my daughter. My doctor sent me to the hospital to get monitored and guess what? It was irritable uterus! Whenver I'd get BH and the baby would move, it hurt.
It can't hurt to tell your doctor that you are feeling a little full and pressure-y in your hoo-hah. (And don't worry, they hear it all the time!)
If you have more than 4 contractions in an hour though, call your doctor as soon as possible.
Remember, you pay your doctor. Your doctor works for you!