You might have pelvic instability.
Seperated pelvis. You can get belly bands to help. Or a brace from a physio.

It's when the body releases the relaxin hormone to widen the pelvis for birth, but it goes too far & puts extra strain on the ligaments & bones.
Mine hurt the worst right in my pubic bone.
It SHOULD go away about 6 weeks after birth, but in some cases (mine) it doesn't.
It will more than likely get worse as bubs gets bigger.

There are a few things you can try.
-when rolling over in bed or getting out of the car try to keep your knees together as much as possible.
-Take it easy
-You could try a physio, osteo or chiro. One of them might be able to help.
-Panadol was the only thing they offered me.
-when in labour do everything you can to NOT end up on your back with your knees up to your chest (exactly how I gave birth!)
-Before labour part your knees to where they are comfortable & measure it with a piece of string. Keep the string with you in labour so you can show the MW's & let them know you can't open your knees more than that.

It is painful & may make everyday life impossible if you are unlucky like me, but using a belly belt/brace & resting as much as possible could help.

Noone told me any of this while I was pg & I asked a gp & an OB about it.
I really hope it doesn't get too much worse for you.
Hope that helps just a little.