I happen to get a whitish cluster under the foreskin of my penis in three different spots. feel no pain but if i pull skin back tight they feel hard?

Here are some...: What you reported most likely represents the inconsequential foreskin-related changes, which require no active Rx but conducting regular cleansing. Of course, it is hard to give an accurate Dx without a direct look at them. If needed, the worst scenario will be circumcision for recurrent bothersome irritation. More? Seek evaluation and counseling.