Hello,
Welcome to the ehealthforum and I am really glad to help you out. These can be the early signs of labor. You may also find it easier to breathe or you may sense heaviness in your lower abdomen. The other symptoms are increased contractions (come at regular intervals, do not decrease with change in posture and last about 30-70 seconds) and sometimes a bloody show due to passing of the cervical mucus plug.
I would suggest you to contact your gynecologist immediately and get a pelvic examination done to clear the status of the cervix (dilatation and effacement) and the position of the head.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.