Ay oo, marami sa amin ang nakaexperience nito especially around third trimester kaya don't worry! Those sharp pains are usually ligament stretching or baby moving around, but since it's making you wince talaga, better to mention it sa OB mo sa next checkup para ma-rule out anything else, some of my mum friends had the same thing at 31 weeks at okay lang, but it's always good to confirm. If it gets worse or may other symptoms like bleeding or consistent contractions, don't hesitate to call your doctor agad ha, pero from what you're describing it sounds like normal pregnancy stuff na.