Prescription filled 1 week early?

I refill my prescription on the 15th of every month. I’ve been under the impression that I need to call in to the pharmacy and request to have it filled each time because that’s what my psychiatrist suggested I do. I got a text on Tuesday (07/07) saying my prescription has been filled and is ready to be picked up, but I didn’t call it in so I reached out to the pharmacy to see if that message may have been sent in error and they told me no, it’s ready to be picked up. I picked it up this morning (2 days after receiving the text) and expected the pharmacist to say something since I assume they’d be able to see my last refill date on their computer, but he didn’t mention it.
Has this ever happened to anyone else? Is there a reason this happened? Will there be repercussions for filling it early?