It does take antibiotics a few days to work. With allergies, it's finding the right antibiotic.
Hopefully, that is what you are taking.
Give them some more time to work. In the meantime, rinse your mouth with warm salt water (1/4tsp in 8oz warm water). This can really help to soothe the pain and help with swelling.
Keeping your head slightly elevated at night can also help.
Hope this helps. Do let us know how you are doing.
My best to you,
I had the same problem 4 years ago. My face swoll so bad I looked like elephant girl. I was crying for 2 days. Being the internet researcher I am, I found info that vitamin c helps antibiotics. Took it, my face went down the next day. After five days of antibiotics alone. Hope this helps. Lillibird