Braxton hicks at night

Week 37, been having tightening, numbness and cramps like menstruation almost every night. Gynae said it's braxton hicks, asked me to monitor because I could due anytime. But when I told him it usually lasted more than 30min and frequency is random so it's definitely not contractions, he doesn't believe me and laughed it off with the nurses in the room :( Anyone else having the same experience? The tightness and numbness making it hard to breathe.#1stimemom #advicepls #pregnancy