What's my next move on this ear infection?

Got a friend who’s a Doc to look at my ear which was making a rustling leaf noise. She said it’s infected a bit. Prescribed 10 days Amoxicillin and Mucinex. It dried a bit, and calmed down to a very little click noise. But now a week after the antibiotic was finished it’s back to where it was.

Alphabetically indexed Issues I have: A. There is no pain associated. B. I didn’t take the Mucinex everytime I should have, over 10 days I took maybe 6/24 hour tabs. Now I am starting to take it correctly, but with no antibiotic to help. C. I can go see a doctor again of course, but wondering what people think about the seriousness. Is this like go see the doctor yesterday, or go as soon as I can? D. Mucinex D with Pseudophedrine is something I haven’t resorted to because in the past it has made me feel anxious, and given me palpitations, is that something I should try now regardless of bad side effects?

What is the urgency for getting this fixed if it’s not driving me crazy.

Am I in grave peril? This is my first ear infection, and I don’t want a bad situation to get worse.

Also what did I do to get it in the first place? I think I remember sticking my finger in my ear a lot in the weeks before it happened. Even now I have been touching my ear a lot. Maybe it’s best I just leave it alone!!!