A couple weeks ago we were working on leg and ankle locks. I felt OK after class, but the next day my ankle was definitely sprained. I am trying to follow the RICE recovery (Rest, Ice, Compression, Elevation), but soccer season just started. Coaching 2 teams, I have to be on it and running. I missed a couple weeks of BJJ, but started attending this week. My ankle is still sore, but I need to train.
You have to know your body, become aware of what injuries you may encounter, and what the protocol for recovery is. If you ever have a question about it, see your physician. Once you start to train any martial art, you are going to be sore. Soreness and injuries are not the same, and there are going to be times when you have to train at less than 100%. Everyone you train with will understand, and will respect your requests to go easy if you need to. We all have jobs, and we all need to be healthy to work.
Push through, keep training.