Tell me if the stomach is hardening and choosing a bump - is it spasm?…

Tell me if the stomach is hardening and choosing a bump - is it spasm? There are no pain and bad discharge, the stomach hardens every day 3-4 times probably, and a high bump appears like that, releases in 2-3 minutes. Ultrasound has been put on hypertonus myometrium, but the doctor said this is normal and there's nothing to be afraid of, but I still feel uneasy, maybe take something like magnesium B6?