Go. If you're sore it will help to loosen everything up if you make sure to go back. I remember my first week or two of On Ramp I was so sore, but I went every time because I knew I would be happier if I did.
It's totally fine to take some advil! It will likely curb the soreness enough for you to be able to get through the WOD. And I suggest about a minute or two (if you can stand it) of icy cold water in your shower. If you wake up crazy sore again (which is likely) take a cold shower in the morning. Your body might be all
but you will be much happier in the long run.
And Super Good Luck to you!!!!