Hello, thanks for posting on HCM.
Cellulitis basically is infection of skin and underlying tissues causing
redness, swelling, and pain of the region involved.
Best way to treat it is antibiotics which you are already taking.
Important part is
bed rest that too possibly with affected leg at higher position than body called as leg raise position. It causes gravitational decrease in swelling as edematous fluid drains from that part causing reduction in swelling, redness and pain.
If you are walking around, due to gravitation all inflammatory fluid will accumulate there and cause increased swelling and pain.
So you have to be totally in bed with affected leg raised on 2-3 stacked pillows in bed and not allowing the leg to hang down or sit with leg down for atleast 2-3 days. If you follow this advice it will help in faster recovery and treatment.
I hope I have given satisfactory answer to your query, if you still have any more query kindly write back to me and I will be happy to help.
Thank you