I had my first vaccination 3 days ago - Astra Zennica. Next day I had muscle & joint pains. At first I thought it was going to be a flare up but quickly realised it was side effects. Also, very tired. I had an easy day, didn’t push myself & just rode it out with rest & pain relief. The following day was better only needed pain relief at bedtime. Today, all back to normal. I read that people with weakened immune systems do tend to get more side effects ( don’t know if that’s true?) as it means their immune system is reacting to the vaccine. I certainly hope so. My Rh nurse has advised me not to have my biologic injection this week to give it time to work. That’s all ok with me, I’m so happy to be on my own personal road out of restrictions.