I think first you need to know for certain if you have HSV 1 infection or not. The western blot would be the best way to determine this, yes. If I am doing my math correctly, it has been three months since the encounter in November so you might want to wait just a bit longer. Remember that more than half the US population between 14 and 49 has HSV 1 infection so it is very common.
What even the western blot cannot tell you is where you are infected. If you want to know exactly where the infection is, you need to have a lesion that tests swab test positive. There is nothing in your post that makes me certain that what you experienced was a primary outbreak of HSV 1 genitally, no. Is it possible, yes.
The IgM antibody test is NOT useful and has many false positives that confuse the situation greatly. Please ignore it.
I’m wondering if you perhaps you should investigate a fungal infection with an organism not easily treated with Diflucan.
How is the itching now?
Terri