You should have no problems conceiving after being on bc. There are many women who are on it 10-15 years, and they go on to have healthy children.
Just make sure you look at all options of birth control. Some women have a harder time having a baby after being on the shot-depo provera. I have not seen any medical claims by the makers of depo saying that a women couldn't become pregnant, but I have heard of many women taking years to conceive after coming off of it.
Good luck!