I was fine actually until the third go - just felt a bit fluey for a day or so first times, but definitely felt unwell on the third go! No redness either till the third time, worked it out in hindsight. Seromas can refill very easily, mine did. Surgeons often prefer to leave alone for fear of introducing infection but I had so much fluid, that aspirations were necessary. Problem is the bad bacteria you have naturally can develop, especially if there is a rich nutritious soup of seroma fluid available. It’ll all get sorted in time, but sometimes needs a bit of patience. Best wishes.