Welcome back to the forum.
There is no risk of STD from this event. The STDs are quite hard to transmit. In fact, that is the very reason they are STDs and not transmitted by nonsexual personal contact: the STD viruses and bacteria evolved to require very intimate contact for transmission to occur. That's why fingering and hand-genital contact never transmit STDs. The amount of secretions to which you could have been exposed on the virbrator would be far too low for transmission to occur. You were wise to use a condom for oral sex, and apparently to not have vaginal sex. Those decisions kept you free of any and all STD risk. You do not need to be tested, should not be treated, and if you have a regular partner, you can safely continue unprotected sex with that person.
This is the second time you have come to the forum to ask about exposures that everybody knows are entirely risk free (the other was about STD risk from kissing, which also never happens). Without a bare penis (no condom) inside another person's vagina, rectum or mouth, you need not worry or ask about any other kinds of sexual contact.
I hope this has helped. Best wishes-- HHH, MD
Thank you so much!
I always appreciate your wise and encouraging answers.
This forum and you doctors work very fine!
Best Regards once again!