What do you usually do to LO's bug bite?

Hello fellow mommies! What do you usually do to LO's bug bite? As seen sa photo, medyo malaki ang swelling & cellulitis ng baby ko. We tried applying after bites ng tiny buds in the morning and Calmoseptine this afternoon. We also applied hot compress before putting creams. PS. LO is wearing footed frogsuit last night. We just discovered this before we took a bath this morning. She is fine and her usual self last night before taking a bath, even now. We don't know ano ang kumagat dito & this is the 2nd time na she got bitten. The 1st time was an ant bite but it was not this big. Medyo nakakapraning lang.