Should I see a doctor?

I’ll admit I have been under a lot of stress lately, physically with work and leaving a domestic relationship and having to leave my son and trouble finding a place to stay and balancing a new night shift job, I sleep on a love seat couch, and I barely get sleep due to the loudness, I’ve been to embarrassed to go to a shelter but anyways I am 26 weeks and 4 days pregnant, I took the day off work tonight because after I came home from a 30 minute outing, walked to go look at some apartments for myself, but did do anything strenuous, but I’ve been very sore down there since we got home, I got a sharp like feeling inside my vagina, baby feels like she’s gonna fall out and my lower back and hips and lower belly keep having aches that come and go, like waves, it hurts to walk, and when I sit down it is still coming and going.. I didn’t have any discharge or anything but it does hurt..