I've been taking Ampicillin and Flagyl for a gut infection (Streptococcus) for the past 4 days. I've experienced an increase in GI symptoms (foul smelling stools, stomach gargling etc.), as well as increased anxiety/depression, POTS, lightheadedness etc. However, I don't experience any other classic 'herx' symptoms such as fever, join pain etc. Is this confirmation that I do not have Lyme/a Lyme-like infection?