Redness and Blister Around Belly Button?

Since I last posted my belly button formed a big blister (the incision was healed) and would slowly leak clear liquid. It also seems my whole abdomen is bloated and a crust has formed on my belly button. Everything is tender and I felt a little flu-ish over the weekend. My doctor is referring me to someone available to me in my city so I will see him/her shortly. Just curious to hear opinions so I am prepared when I go in. Thank you!