Of course you can only imagine the transfer history of picking up certain amount of cash at irregular times and online buying coin and paraphernalia.
I am nervous to go to my bank and ask them what the fuck is up. I have anxiety so ill prolly look like a crackhead (I have never taken and amphetamine or coke in my life).
What's the risk/what's the reason? Anyone with a background in the financial industry or law have an opinion on what to say IF they are suspicious?
Just remember, you're not alone. And if you did buy some psychotropic substance on the Internet? That's hardly some great soul-condemning sin! lol, if the cashier at the bank can't understand that, that's they're problem!
Legally there is no case against you from what you've told.