Side muscle strain or worse?

I hit 30 weeks yesterday and was insanely nauseas and throwing up all day. Lots of dry heaving and coughing too. Now today I feel like my stomach muscles and especially my left side feel sore and strained. Right above my left hip or next to sort of, there’s this spot that feels almost a little swollen and not the same as the other side. Any ideas what this could be? Or should I call my doctor/go in? I don’t want to seem stupid for over reacting if it’s just basic stomach stretching or something that i just don’t remember feeling with my last pregnancy.