It sounds like your instinct is telling you not to go, so I'd definitely follow that advice. I had some resentment when I first got sober, imagining I'd never be able to have fun or go to a party again, but nothing could be further from the truth. I'm enjoying my life more now, and after a few months, I can be around people who are drinking, although like soberbythesea said, I often leave early due to boredom! Drunk people aren't nearly as attractive or fun as they think they are, which I didn't really see until I got sober.
Think of it as building a new life which is going to be more interesting and meaningful AND fun, with people who aren't throwing up in your bathroom and spilling all over your furniture. Be patient because it doesn't happen overnight, but there's plenty to look forward to! Congrats on your sober time!