My boyfriend and I have been together for over 4 years we have a good relationship, although we don't have sex as much as we used to, sometimes we could go a month with only doing it one time. I'm 22 and he is 27, I don't know how to get back to how it was in the begunning basically what I'm asking is- is it normal that we don't have sex that much

It's normal if both of you are happy with it this way. If it is making you unhappy, then you need to speak with him to find out why things have changed so much. Let him know how you feel.

Its never going to be like it was in the beginning... because that new meat excitement can't last forever...

Its ALWAYS going to taper off as familiarity builds... however once a month is an aweful LOT of tapering off to happen...

THat much means something else is going on... something you apparently are not aware of. And it could be any number of things or any combination of them... some your fault... some his fault... others the fault of outside parties and events neither of you can likely control.

As was mentioned... talking is good... you can't work on fixing what's broke until you both know what it is.