What to do if my scrotum is itchy and has swollen up, what should i do?

See Urologist: Could be as simple as a local yeast infection that can be corrected with a topical antifungal ointment or could be as serious as a bacterial cellulitis which would require oral if not IV antibiotics. The swelling could be from local inflammation or fluid around the testes called hydra cells. A urologic evaluation or at least being seen in a urgent care or by primary care physician is necessary.