Oo, normal yan sa ganyang stage of pregnancy, parang Braxton Hicks contractions or ligament stretching lang, marami sa amin na-experience yan closer to due date kaya hindi ka mag-isa! But since you're already 36+ weeks, mas maganda na i-check mo with your OB para ma-rule out any complications, lalo na kung ang sakit parang regular na cramping or if may discharge, better safe than sorry talaga, diba?