Some folks take up to 16 weeks to produce detectable antibodies, while I'm aware of one case where they tested positive at 3 weeks. The statistics tell us that about 98% of infected people will test positive by 16 weeks using an IgG test like the HerpeSelect.
The ideal scenario would have been for you to get to a doctor or clinic when you had active symptoms like actual blister or wet sores and have they do a type-specific culture. If you get a new OB, try to get that done.
It sounds like a new HSV2 infection since you already have HSV1 orally so it wouldn't be a new location for type 1.