Thanks for your question and concern as you mentioned that you are planning for additional female and the use of toys so let me tell you that sexual infections are spread by transmission of body fluids and if any genital to genital contact is their between the female then the chances of sexual infection is their and using of toys among female will be a big risk In your sexual activity. There may be chances of genital herpes pictures which can be seen. As Hepatites b, c, HiIV, Chlamydia, Syphilis, HPV, Herpes are spread from genital to genitl contact or by the exchange of fluid that get transfer from one body to other. Treatment is limted but in the case of HPV, HIV and Herpes there is no cure. So according to me you are still at risk, so I would suggest you to see a doctor in person.Take care