If you have PID more than likely so does your partner. Men can carry a infection for a long period of time and never really know it. Females on the other hand will know fairly quickly if they have an infection. The PID causes a lot of pain in the lower ab area and can be very serious. It is really hard to say who was carrying the virus but if both are active with just each other then both will have the virus.
PID is Pelvic inflammatory disease and if anyone from partners have this disease so there are open chances for second partner to get affected. In that case, some precautions are need to be follow. For Complete details, following link will help you:http://www.cdc.gov/std/PID/STDFact-PID.htm
Well if you have PID , your partner can have PID , goneria , or chamedyia
If my partner was a virgin when we had sex the first time does it mean I have spread it yet if it is not a full blown std