Sorry, I do not look at clinical photos, either on line or by email. To me it comes too close to making a specific diagnosis, i.e. practicing medicine from a distance, which I will not do. Some med help moderators do so, including Dr. Rockoff in the dermatology forum.
Oral blisters certainly could be herpes (which you could have acquired either by kissing or performing oral sex on your partneer a month ago; or somewhere else, nonsexually; or perhaps years ago. However, just feeling you 'might' have blisters, ie soreness without visible inflammation, does not count. So I very much doubt you have oral herpes. In general, oral sex is very low risk for all STDs.
The rash on your abdomen and elsewhere almost certainly is not herpes or any other STD. The way to know, though, is to see a health care provider and don't try to solve things from a distance, whether on line or any other way.
Best wishes--- HHH, MD
I have had no fatigue or diahhrea or vomitting this past month.
I had the above symptoms 3 months ago, when I engaged in the same activity, but without the rashes or blisters. The symptoms lasted 2-3 days.
Makes no difference in my response.
No continuing discussion; I responded to this one only because you posted it before my reply.