With a positive PCR, you don’t need a western blot for confirmation of your HSV 2 diagnosis, no. The PCR is definitive.
The risk of transmission with you using antivirals and him using condoms is about 1-2% per year, having sex about twice a week. Him giving you oral sex present a low risk of him acquiring this orally. There are now some great little panties available for someone giving oral sex to someone with HSV that allow lots of sensation but avoids the dental dam thing.
No need to feel ashamed! I hope you are getting past that.