Incision Care red lump on the incision?

This could be a blood blister if you are referring to the scar tissue. I had a bump start forming on my surgery scar and when I went for my follow up, I asked them to pop it. I'm glad I did because I had fluid from my pancreas building up and that's what formed the bubble. When they popped it the fluid came like a wave so unless you have a lot of towels or feel like your going to burst. If your feeling really bloated I would call 911 unless your seeing a doc the next day.