My housemate has a cut near the nail on her thumb, happened Saturday while weeding in the garden. Went to Kaiser Sunday, they prescribed antibiotics, heat, and keeping it raised. She wasn t very diligent about this. Now, after 4 days of antibiotic, the thumb is purple at the tip, 25 % swollen and has a broad band of pus whiteness. And then she poked it with a needle today. Appt with MD tomorrow, but I m worried about sepsis. ER tonight or No?