About once a month I get tiny little bumps on my lips. They can't be seen but I can feel them and they burn. After a couple days they feel chapped.?

Herpes? Sometimes herpes can act that way, would get checked out.
Herpes likely. Herpetic infection may present subclinically without the overt lesions manifesting themselves. If you are a woman, does the onset of these bumps correspond to the onset of your menstrual periods?. That might also be responsible for onset of recurrences.