I doubt it's anything to really worry about- is baby still moving around? but like crete's advised (perhaps a bit bluntly) the best thing to put your mind at ease is to speak to our midwife or HV.
speak to your GP or midwife as the others have said. there are so many things a pain could be, not all of them 'normal'.
Your midwife will not mind you calling, or speak to your local pregnancy unit at hospital if you cant get to see or talk to anyone else.
Im sure all will be fine but better find out from a professional than from us on here
they might be braxton hicks ( although I do think it is early for them )
I would ring your midwife and explain to her what the pain is like ?
hope every thing is ok for you