Repeated pain in lower abdomen. Leak!

Known Conditions: 16 week pregnancy • Low-lying placenta (anterior, 1.4 cm from internal os) • Subchorionic hemorrhage (~4.1 x 3.2 x 0.9 cm) • Cervical length: 3.7 cm (closed and normal) • Fetal growth and heartbeat: Normal • All labs (CBC, CRP, ESR, vaginal swab): Normal • No visible bleeding so far Primary Complaint repeated pain episodes in the lower abdomen: • Pain comes every few hours, lasting 15–20 minutes since last two weeks already admitted twice in reputed hospitals in NCR • Feels like deep pressure, pulling or cramping • Often relieved after urination • There is a frequent urge to pass urine during pain episodes • No fever, no vomiting, no diarrhea • Mild hip and thigh pain also occurs • One episode of wet discharge, but no consistent fluid leak