I just posted this a couple days ago. I'm 33 weeks and having the same issue. Some ladies basically told me to get icy hot, heating pads, or ice packs, and stretching. I hope it helps you too and good luck
You can take Tylenol. Try having someone massage your back for you... that really helps me. You can try applying heat as well. I'm sorry you're in pain. Hang in there mama.