i am having pains in my lower belly what does that mean?

How far along are you? It can mean many things. If you are nearing the end then it can be braxton hicks. If you are close to the beginning; as food passes more slowly through the bowels can cause constipation resulting in tummy pains. If the pain is consistent and very painful which is not getting better with time or if you don't feel right then you need to call your doctor or go into the hospital.