Hello and thank you for the question.
Answers given are for informational purposes only and are not meant to replace an exam by an in-person.
I am Dr. Sohaib, a practicing Internal Medicine Specialist and i will do my best to help you today.
Given the fact that 12 hours have elapsed since you drink the juice (liquids get digested and absorbed completely in 2-3 hours), and did not experience any diarrhea or vomiting (cardinal symptoms of infection) ---- you need not to worry.
Probably the mold was not infectious.
Or if at all it was, it was not sufficient to give you an illness.
Nothing is required at the moment, except just a watchful monitoring of your symptoms for another few hours --- and if you remain normal in between, there is absolutely nothing to worry about.
Keep yourself adequately hydrated.
And take Prilosec to control the reflux you have.
I would have been worried too if i were at your place but let me reassure you that this does not sound serious at all.
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