That's great news! :)
Your mind is very powerful and will actually make you feel symptoms you "think" you have.
A few months ago, I was in the same situation. I had this constant dull aching pain in my lower abdomen/ovary area. It would hurt from around ovulation time until my period. After several months of this, I scared myself that it could be ovarian cancer. I've read that if you feel pain, it's advanced already, too. Anyway, my doctor said she wasn't concerned but scheduled an internal u/s along with an external and both came back normal. After hearing that, instantly the pain vanished.
I'm so happy that your doctor feels everything is fine. Take a deep breath and relax. :)