I understand exactly how you feel JJ. If your GP really thought it was anything, they'd have insisted you had test. As it is, they recognised that having the test would only reinforce your belief that only tests and doctors' visits etc. can give you certainty that you are well, when the opposite is true for someone with health anxiety. I've been to GP, thought I am fine and can stop worrying now and come home and started the whole what iffing again so reassurance isn't the answer. What helps is distraction, saying I'll sort this out next week if it's still bad and so on. Glad that they have referred you for further CBT or therapy as a complement to your medication. If the sertraline is not helping in a few more weeks then you can always have a rethink on that. Do try and read the Overcoming Health Anxiety book by David Veale- it's available on Kindle and isn't very expensive. Even if you can't do the CBT stuff ( and I agree that when you are a sufferer, the coming up with rational alternatives is hard if not impossible some days) , it helps, I think, to read that others have been there and that what you are experiencing is normal for someone with HA. I found changing my behaviour first, so not googling, not going to hospital , drs etc. helped me change my thoughts slowly too. I'm with Orchid- so much of our lives are lost to worry and we have to take a stand x