Mama, I know nakakabahala yan, pero please call your OB or go to your clinic/hospital right away para ma-check mo properly, lalo na kung ang sakit is persistent or getting worse. At 35 weeks, may maraming possibilities, pero hindi ka dapat mag-guess lang, kailangan mo ng professional check-up, especially if parang cramping talaga ang feeling mo. One of my mum friends had similar pain at 35 weeks and turned out she needed monitoring, so better safe than sorry! Wag mo palampasin, okay? Let me know after your check-up. Sending you hugs!