Opening in incision a seroma? 1 month post-op. (Photos)

I had a circumferential Tammy tuck almost 4 weeks ago. The front portion of my incision has some white spots appear. When I went to see my PS he tried to drain what he said was fluid but nothing came out when he placed a needle in the area and applied pressure. Last night a small hole opened in one of the white areas and I literally poured a yellowish, bloody fluid. On call PS said it was Seroma and to keep it covered until seen Monday. What can I expect from here as far as healing and treatment