am i in labor ??????

keyawna
FTM. 39w 3d not sure if i'm in labor or what i should do😩
since about 7pm my stomach on & off has been tightening up and within the past 2.5-3 hours there has been pressure in my lower abdomen my lower back has started to hurt and hasn't stopped and last may be TMI but my butt has been hurting.
could this be the first stage of labor?? what should i do?? please help