Cramping/gas pain @ 34 weeks ?

I’m 34 weeks & ive been having pain on and off since earlier today. I thought it was just gas pain but I won’t pass any gas, or that I was constipated but I’ve been and used the bathroom twice today. No real pattern but I’m definitely hurting and it’s

Been basically all day. It seems to come and go. Have no car so I wanted to get others opinions before I worry myself and go to L&D!