“The first, and only, time I’ve taken Communion was at a Catholic Church in Sedona, Arizona. Was that wrong?”
With 100%, respect: yes. It is wrong to take Communion in a Catholic Church without formally enrolling in the Catholic Church. You have two options: easy and difficult. Easy: claim ignorance and get a pass. Difficult: claim responsibility and then talk to a priest, fast for two years, talk to the priest again, and hope for mercy on your account.
If a priest allows non-Catholics to take Communion, then he is guilty and no one wants to be in his shoes.
“With 100%, respect: yes. It is wrong to take Communion in a Catholic Church without formally enrolling in the Catholic Church. You have two options: easy and difficult. Easy: claim ignorance and get a pass. Difficult: claim responsibility and then talk to a priest, fast for two years, talk to the priest again, and hope for mercy on your account.”
Or don’t worry about it.