hello dear
not to worry about any of 
STD or 
HERPES at all
generally this kind of disease occurs at the genital organs and you developed skin disease over the bump so not to worry at all
now about the structure of the eruption you developed, its just like a pimple or eczematous eruptions only as you clearly mentioned that from that white ball like part is coming out from the same so its normal 
skin infection it could be pimple, 
allergic dermatitis, or eczematous eruptions only so nothing to worry at all as these all are treatable and that too with 
homeopathic medicines without any side effects or harm to the body
here is the prescription
1. hepar sulph 30 2dram 5-5-5 for a week 
2. graphites 30 2dram 5-5-5 for a week both you can take together 
3. calberry soap - best antibacterial soap
this will be enough to clear up your phase 
if you are sexually active member then please do not forget to use protection while about to indulge in sex in order to prevent yourself from any of the STD 
be careful is much better than get infected 
all the best 
to purchase any of homeopathic medicines online 
visit - www.homeotouch.com
email - drpremalshah@gmail.com
call +91 98254 44736