Hi Dr, I want to ask, now I am pregnant 32 weeks, contrction happen since 24 weeks, now the contraction interval happen every day, if i am not drink nifedipin or duvadilan contraction happen more than 10 times per hour, and getting better if i drink a tokolitic drug, my question... is this contraction with interval above normal happen in my pregnancy now? And please give info which one better between duvadilan n nifedipin? And the save dosage to treat my conditionnow. Thx for answer