Hi Mo. Can you upload a picture or two of the lumps?
While I cannot determine the origin of these lumps without examining you in person, of course, the pictures do suggest a couple possibilities. One is actinic keratoses, also called solar keratoses, are pinkish or flesh colored, slightly scaly growths that typically appear on sun-exposed areas. If left untreated, up to 10% develop into basal or squamous cell cancer. Almost all AKs can be eliminated if treated early, usually by cryotherapy, topical creams, phototherapy or surgically.
Another consideration would be mulloscum contagiosum, a benign, relatively common viral infection of the skin that results in painless flesh colored bumps with a small central depression. While it is more common in children, it can affect adults and spreads through direct person-to-person contact. They usually disappear within a year or two but may develop for up to 5 years and can be removed with creams, scraping, freezing or laser therapy.