I think you will be just fine. Like you said, people don't look at preclinicals at all. But just to make things right, mention it on your PS and explain what happened. For a reason, unknown to me, PD want to know everything about you. They are especially nosy in terms of your red flags and other issues. I personally asked a surgery PD why they want to know what happened if you for example have a gap in your academics, when in 99.9% on cases there is a simple and quite innocent explanation, like volunteering in africa, etc. He said, they just like to know. And he also said" you don't have to tell us. You can say it is my private life and I won't share with you; but then we won't take you." Kinda weird, I think. But it's the reality.
So don't sweat it. Just explain it.
You should be fine.
