About a month ago i noticed a pea-sized lump under the skin near the base of the penis. it just recently started to become slightly painful. advice?

Here are some ...: The described pea-sized lump, which may be a sebaceous cyst or a small lipoma, may become infected or inflamed. For the time being, leave it alone or apply warm pack (don't burn the skin!) 2 times x 5-10 minutes daily and see if improving or resolving in 4-7 days. If not as expected, see Doc for confirmation and care timely. Note: Not seeing & palpating it makes giving an accurate Dx hard. Best...