Welcome to HCM.
I understand your concern.
Twitching and swallowing of lip may be an early sign of some infection or may be non-specific.
If swallowing is NOT associated with pain, redness
, skin lesions or tingling sensation
than you need not worry and there is NOTHING to be done. It would go away on its own.
If you find that there is burning pain, small blisters along with swallowing than there is possibility of herpes labialis. In such a case, you should consult a dermatologist
and take anti-viral medicines.
There may be some inflammation of facial nerve
if you experience severe pain
on one side around mouth, on cheeks and just anterior to the ear.
But in your case, if there no pain, redness or blister than you need not worry about these things. Just be watchful for them and consult a doctor if any of these symptoms are there.
Hope this will be helpful.