That sounds rough, I’ve had cellulitis a few times myself and it can really knock you around. The antibiotics should help, but if it doesn’t start improving in the next couple of days, I’d definitely follow up with your dermatologist as soon as possible. The swelling and pain can be intense, but in my experience, it usually starts to get better within a few days of treatment. Hopefully, that happens for you too and you won’t need to go the IV route. Take care and don’t hesitate to reach out if you need anything.