Thanks for writing your query.
After reading your post, it seems that you might have bitten your tongue leading to swelling of your lips.
You can take an antacid
for increased acidity in your stomach along with an anti-inflammatory like ibuprofen
one tablet twice a day along with an antihistamine like cetrizine
10 mg once day.
Local application of cold compress/ice on your lips will help in reducing the swelling of your lips.
If the problem persists, get yourself examined clinically.
I hope this is helpful to you.