It is due to infection of glans
Thanks for your query,based on the facts and photographs that you have posted it appears that you have developed bumps on glans of your penis after unprotected oral and intra vaginal sex.
It is due to bacterial infection of the glans of your penis .The excessive smegma
is due to excessive secretions of the mucus by mucosal glands located in glans of the penis,
Since all the basic tests fir STD
are normal you should not get worried at all.
Please take broad spectrum antibiotics like Cefotaxime
along with anti inflammatory medication like Diclofenac
twice daily .
Ensure to clean your genitals with warm water twice daily.
This will get cured within a week.
Hope I have answered your query. If you have any more questions please feel free to ask me I shall be happy to help you .
Thanks and Regards.