Hey mama! Hindi ka lang naman, a few of us have experienced something similar during and after pregnancy, and honestly na-confuse din kami kung anong tawag talaga! Sounds like it could be sciatic nerve pain or just the general back/hip/glute strain na common sa pregnancy and postpartum kaya lalo dumudugo ang sakit kapag nakahiga or umupo ng matagal (parang ang katawan mo talaga nag-shift na). Best thing is mag-check ka sa doctor para sure kung anong exactly ang nangyayari, pero in the meantime try pang-alternate positions, stretching, at yung parang pelvic support belt, maraming sa amin swear by dyan habang naghihintay ng check-up. Mas mapapabilis lang ma-address niya kung may professional na makikita agad, kaya don't delay! Take care, first-time mama, ganyan talaga ang journey natin.