Ive had BH contractions off and on and my stomach has been really uncomfortable all afternoon. Ive…

Ive had BH contractions off and on and my stomach has been really uncomfortable all afternoon. Ive tried water and laying on ny left side. They arent consistent or anything..is there any other reason this could be happening, and is there any other way to try and stop it? At what point should I get looked at? If I need to get looked at, I could technically go to L&D now that Im 20 weeks tomorrow rather than the ER. Idk what I should do 😕