Happy New Year! ?Ladies, such a question haunts me: who has their bell…

Happy New Year! ?Ladies, such a question haunts me: who has their belly hardening? According to ultrasound, there's no tonus, no special discharge, no pain, just several times a day the belly hardens for a maximum of a minute or 15 seconds... somewhere they write that it's training contractions, but the gynecologist hasn't said anything about this... I think maybe magnesium can be taken, is it worth it? I'm just worried about the baby, already irritated when the belly is hard, at first I didn't worry much, but now I don't know if the baby is growing and the belly is hardening.