I had been feeling better for a good few days this week - no dizziness, headaches virtually gone, no shaking, temperature fluctuations etc. However, I now seem to have side effects back: weird headache, dodgy tummy, nausea, achy etc. Does anyone else have experience of side effects taking a ‘holiday’ and then returning? It’s annoying as I felt my anxiety was getting better (I have been on Sertraline for about 3 and a half weeks) and now I seem to have gone backwards and feel jittery and anxious again. I am on 50mg per day. Thanks.