I’m a bad drunk all of a sudden? Advice pls

I’d really appreciate if someone could provide their input or any advice they may have.

I’ve been drinking for many years now and I have always handled my alcohol very well, I could drink as much as I want and wouldn’t have any memory loss or any unusual behaviour, honestly most of the time no one would ever be able to tell I was drunk. However as of this year I’ve started to become a ‘bad drunk’, I often have little to no recollection of the previous nights events, I act bizarrely and uncharacteristically, sometimes going past an embarrassingly drunk state to straight up aggressive or mean and vindictive. I also cannot tell when I am drunk anymore whilst I am drinking, until get to a REALLY drunk state I will genuinely feel sober even though I definitely am not. I have no idea why this is happening and why I can’t control myself whilst drinking anymore. It’s really bothering me as I do enjoy having drinks with friends and family from time to time but I cannot stand the unruly drunk version of me. How can I fix this? Or what might be the possible cause?

Thanks in advance 🙂