Girls, 35 weeks pregnant, for several days now I've been feeling stran…

Girls, 35 weeks pregnant, for several days now I've been feeling strange pains in the groin (pubic area and labia). The main thing is they aren't pulling pains but feel like muscle pains and they only appear when I turn over or get out of bed; otherwise there's no pain. I'm not doing any exercises and there hasn't been sex for several weeks, so there've been no changes and it happens on its own. Has anyone experienced this?