May tinatawag na Braxton Hicks contractions during 3rd trimester. Its normal and nothing to worry about. Thats the way of your body to prepare for the real labor.
Keep calm, and know that everything will be alright dear. Just follow your OBs advise, bed rest if needed and kausapin mo din si baby.
Wg ka po mgpanic.. Sundin nyo lng po advise ng ob nyo po