Your genital bumps are most likely a rash, known as Molluscum contagiosum.
They appear as smooth, pearly to flesh-colored, dome-shaped bumps, with diameter 1-5 mm, and dimpled center.
With time, the center of the bumps may look like white curdlike core.
This rash is a result of viral infection and is considered a STD, since it can be transmitted during sexual skin to skin contact.
It may result from infection during different contact sports, and even from using infected towels, clothes, and washcloths.
Most cases of molluscum clear up on their own within two years, but, when located genitally they need to be treated, since there is a great chance to be spread to wider areas while scratching them (that's why you have noticed an increase in their number).
Once they are gone, eradicated with treatment, the chances for transmitting through sex are almost equal to zero.

See your physician and get treated if you do not want to spread them to your partner!

Best wishes!
Marija