Appendicitis, and then Gall Bladder pain?

I had an appendectomy performed about four months ago, because it was inflamed and about to rupture. I'm a teenage girl by the way. I recovered very well, and for months I had no stomaches. I used to have stomaches all the time before the pain was considerably worse, and my appendix was removed. Now, lately I have been getting bad abdominal pains, usually in the evening, but they go away in the morning. Could this be my gall bladder?