That is your life you are playing Russian roulette with that was supposed to say.
Could be bacterial vaginosis from using dirty toy...but yes you can get an STD from unprotected sex. That is the only way pretty much to get an STD. Itching does sound like bacterial though.
Why did you use a dirty toy? And why aren't you having safe sex? That is your life you are llay
I forgot to mention that my vagina itches as well! I also work in a sitting position too for a year now so I don't know if that counts on the itching part lol