Concerned with my alcohol intake

Since I started drinking I’ve spent all but 1 weekend drinking heavily. That’s like 2 nights a week with 6+ drinks. Outside of that I don’t drink at all and I don’t really want to either. Sunday night I had 9 drinks over like 6 hours and I’ve felt really anxious all week and a little depressed. Not sure if that’s cause of the alcohol or cause school started and I’m stressed.

My brother was an alcoholic but quit. Im afraid of becoming an alcoholic cause i already feel like I don’t want to take a weekend off from alcohol cause it’s so nice…

I don’t know what I’m asking here, maybe I’m just venting. Im concerned I might be one of the people who can’t drink in moderation no matter what.