What u are describing maybe braxton hicks or just baby moving.
I suggest that u palpate (feel) your abdomen when u experience discomfort. With ctxns u should be able to feel the muscle wall become firm then relax once the pain resolves. Either way, pay attn. Keep well hydrated. If your ctxns are rare (less than 6/hr) and mild it is likely okay. If they persist see your md.