Cramps or ligament pain

Ligament round pain should not feel painful but just a stabbing quick pain which is the stretching of your belly which will go away after a few seconds. The way you describe the pain sounds more like braxton hicks which normally starts in the 2nd trimester. Comes and goes for a few seconds and normally will go away when you change your position. Should not feel too painful. Or you could be dehydrated. Dehydration can also make your belly feel like braxton hicks so do drink up. If it is too painful, better see your gynae cos all the above I described shouldn't feel pain.