you and your current gf should both seek out type specific herpes igg blood testing. with her being pregnant, both of you know your herpes status is very important to the health of your baby!!
could it be herpes you had? could be but it also could be many other things. at this point the only thing you can know for sure is if you have herpes or not so get the proper testing. did you also cover your bases for all other std's too at the proper times?
grace
You need to be seen and tested, as does your girlfriend, as soon as possible, if you currently have leisions.