Alcohol advice

So I want some advice because something weird has been happening. I’ve been drinking for years now and know my limit and what does and doesn’t agree with me. I rarely drink also. However, the past 3 or 4 times I’ve gone out drinking I end up feeling sick at the end of the night. My stomach gets really upset, I feel a bit nauseous and I have to go to the toilet a lot. Even when I’ve only had 2 drink and am completely sober it still happens. I am unsure why this has happened. The only idea I have is to at I’ve started vaping when having a drink and only do so when I drink. This is really getting to me and making me think I should just stop drinking. However I do love a social drink with friends so I’m not sure if it’s an issue I can address or fix as this is a new development. I’m in my early 20s also.