Lower Abdomen

Hello. I am 27 weeks pregnant and sumakit yung puson (parang may uti/naiihi kahit kakagaling ko lang ng cr)ko ngayon for about 30 secs to 1 min. Pero nawawala naman po. Is this normal po? Or is this a sign of labour? #advicepls #pleasehelp #1stimemom #firstbaby #pregnancy