Feeling like I can’t drink anymore

Hi there- 38f here.not sure if this is the right place for this… I’ve been drinking less in an effort to lose weight and now I only drink socially. I drink probably about once a month now and it’s usually only 3 or 4 drinks max. What I am noticing that I’m getting a terrible stomach ache and nauseous after only having 2 drinks. This is really frustrating because I love to drink and don’t indulge often, so when I do I would like to enjoy without such heavy aftermath and I know I’m not drinking much. Just for context, I had only about 2 or 3 mixed drinks of tequila (blanco- decent quality IMO) tonight. They were mixed with pineapple juice and lemonade. I do try to steer clear of calories before I drink and eat while I drink. Maybe I’m not hydrated enough when I drink ? Not sure what it is but I feel like I need to give up hard liquor al together and i really don’t want to do that.