Developing bumps after lap. hernia surgery

It sounds like a seroma. I have larger one near my belly button and it is uncomfortable and tender. It’s hard when I touch it and it sounds like you have the same thing. I was told they take time to go away. Your body needs to reabsorb it and could take months. My surgeon said these sometimes form at incision sites as a collection of fluids. If they are able to drain it then it relieves some pain but once they harden then your body has to reabsorb it.
Hoping you are feeling better each day.
Mel