New to the site...have a male rat terrier, Trace. I have another female dog that was in heat and Trace was going insane with this situation. She is now not in heat and he is hurting bad...it seems that the area between his testicles and his butt is sore to the touch...he can do everything that he could before this but he walks around very gingerly and seems miserable. Wondering if I should be concerned...I know that a trip to the vet is probably inevitable but wondering if anyone has seen this and should I be concerned...any replies would be appreciated...

Thanks