I know when im walking about to much i get alot of pain in pelivs and back and its SPD, maybe its that? pregnancy-related pelvic girdle pain (PPGP) or symphysis pubis dysfunction (SPD)
Or Round ligament pain is a sharp pain or jabbing feeling often felt in the lower belly or groin area on one or both sides. It is one of the most common complaints during pregnancy and is considered a normal part of pregnancy. It is most often felt during the second trimester?
then there is pain that occurs along this nerve, the condition is known as sciatica. Many women experience sciatica during pregnancy because the enlarged uterus presses down on the sciatic nerve. This increased pressure causes pain, tingling, or numbness in the lower back, buttocks, and thighs?
the second two i copied from google, am sure there is more! If its bothering you talk to your doctor or midwife and see if they can offer any support x