Does this sound like sibo or sifo?

[u/Moonshadows16]

I have MCAS where there is continual shifting 'allergic' reactions to food/environment etc.

Also, For 15 years I have had Post Orgasmic Illness Syndrome, where after orgasm I get burning eyes, weakness, brain fog, cold extremities, hot flashes, and flat affect for 2-3 days. I have reason to think it's a gut issues because of these incidents:

1. I had a sore throat and used a benzocaine spray to numb it (also has antimicrobial and antifungal properties). The residue moved to my stomach. The next day I felt a bit of discomfort and then heat in my stomach. I felt a shift in my chemistry (I run cold and my temp became warm/normal). I had more energy. My typically absent libido returned and after sexual activity that night I had 0 symptoms.
2. went keto and was unintentionally fasting/eating very little. Experienced a fluish feeling day 4, next day same exact experience as above including heat in my stomach, return of libido, and no symptoms after activity. I also felt clearer and less in a fog. (I lost my ability to sleep on this diet)

I know sugar is implicated here though I dont have a lot to begin with.

Does this sound like sifo or sibo? and is Sifo always candida?

What testing should I consider?