Help?

Holleh
Im currently 35 weeks and since yesterday atound noon ive been having this sharp pain that gors across my lower belly. It comes and gos. I have talked to my ob and they said if i starting getting tightness in my belly to come in. But there is no tightness amd im still getting these pains.. My belly is also sore to touch now.. Anyone else going through this? And its def not BH