Contractions 31 weeks

mebx • 37 TTC#1 low AMH, 5 MCs 😇 Pg with twins

I am starting to feel contractions and I am 31 weeks + 1.

I won't see my OBGYN before next week so I would like to know if it is normal or not?

It is not painful but he does not feel comfortable... my belly is becoming very hard a few times an hour...

Should I worry?