I had prolonged(8 months) toilet itch before 7 years.now my wife is pregnant. that itch germ could have mixed on my blood? and it could affect baby?

Contagious rash ?: Uncertain about your data: if the "itch" preceded your wife's pregnancy by 7 years, and was not evident during that time, the chances are excellent that no transmission occurred, and that it would not be in your bloodstream or cause harm to the pregnancy. You should be checked by your physician to make sure you are free of the agent which caused it, however.