Back & Pelvic Pain/Discomfort

I was just getting out of the bed and i have a cramp type pain in my back (low, dull backache) and pelvic area where it's circled in the picture. Not sure where it's coming from, but it hurts really bad to move it. Idk if it could be the way my baby is positioned? He likes to stay low in my pelvic area (24 weeks). Does anyone have an idea of what it could be?

Update: my back is still hurting and im laying down again now, its a constant pain sort of like mild period crams, but in my side/back. I can feel my baby moving & i still feel the pain so idk what it is. The pain is also kind of like having trapped gas in your back thats stuck in one spot.