Thanks everyone for your kind replies. I'll deffo push it when I see the OB next. I don't think it is cellulitis from what I've googled. Definitely not red or any discharge. Just super hard and painful.

I am wearing a belly band thing which really helps with the pain, and when its not too hot I have some stretchy supportive pants too. Unfortunatly Perth is sooooo hot all the time at the moment so not getting to much opportunity to wear those pants.

Thanks