Thanks for the query. I understand your problem and will try to answer the best possible. The swelling of the lips is a condition known as Cheilitis. It is caused following trauma, due to infections like herpes simplex virus, deficiency of vitamin B12. The patient usually presents with symptoms as described by you. I would recommend you to use anti-inflammatory drugs for 3 days. If the symptoms does not subside you can consult your doctor for the same.
Hope this helps.
Thank you.