My belly button is healing but it still hurts at times

And I know it’s gonna hurt because I just had surgery on it but I’m still experiencing the same type of pain from when I had my umbilical hernia before the surgery. My ex keeps thinking that it’s probably just gas, it’s definitely not and besides we just can’t keep brushing things off as just gas 🙄🙄 what if there’s something going on in there 😔😔 I know for a fact it’s not a baby because I had my period all last week.