Sharp Pain

I turn 35 week tomorrow. The past couple of days I have had more pain in my pelvic area and I will get sharp pains on my left and right side of my butt. I had an ultrasound yesterday and the ultrasound tech said that the baby is really low. This is my third pregnancy. I’m a first time surrogate so I went through the IVF process so doctor mentioned about inducing me at 38 weeks. I hope I can stick it out because I’m in so much pain. Anyone feeling sharp pains in their butt area? I’m just sucking it up and not taking any pain medication or anything.