How Do You Check Pancrease Funtion How Do You Know If Your Navel Piercing Is Infected?

How do you know if your navel piercing is infected? - how do you check pancrease funtion

I have my navel pierced last Friday and was not too bad until the last day. I was regularly with antibacterial soap and water, but today it is red, crusty, warm to the touch and swollen. Also my stomach is slightly swollen and he is hot and it hurts to stand for me. How long should I go to a doctor this before you check? Or is it normal?