Spins when having two different drinks

This has happened to me now several times. If I have two different alcohols for example a margarita and a beer or a glass of wine and then a hard cider – I get the spins. Even if it’s only 2 drinks total! I will feel absolutely hammered and start spinning. I am 38 years old/o female and on the smaller side. This has never been an issue for me before. Has my tolerance just plummeted with age or is something else maybe going on? I’m honestly embarrassed to even ask my doctor. I don’t drink much, not even every week. But when I do lately if I have two different drinks I get super spinny.