Blacking out drinking 2 nights in a row.

Hi, I’m a 23-year-old male. I accidentally blacked out from drinking two nights in a row.

The first night, I blacked out at some point during the night, but I don’t remember exactly when. I just woke up the next day feeling really sick and out of it. I had to take Advil throughout the day and rest because I felt completely drained.

The second night was worse. I woke up on the floor with some vomit nearby and again had no memory of going to sleep.

What’s strange is that both nights, I felt totally fine up until I blacked out. I didn’t feel especially drunk or out of control. It just kind of hit me out of nowhere.

I’m stopping now because this shook me up, but I wanted to ask: is there any chance this could cause permanent brain damage or long-term effects, even minor ones, or am I probably okay? Any long term brain damage?