Anyone dealing with sciatica?

An

23 weeks pregnant. Any ways to relieve the pain? It hurts to walk after a couple minutes I literally feel like my right side lower back butt area just gives out like a nerve or something. So painful. I was active with my first and have also been just as active with this pregnancy but after being up and down this weekend for my babies 1st birthday party it’s just completely painful. Afraid I overdid it and there’s no relief until after delivering 😭 Any relief advice helps. Thank you ladies.