Anxiety again

Hello i suffer with general anxiety and I have been on fluoxetine since 23rd may I was on 2.5 to start with which is 10mg and I have been slowly building my way up to 5ml well past 2 days when I've been taken the full 5 I have had nothing but chest pains and severe anxiety again feeling anxious and fearing of dying.. and it only happens at nighttime also every time I'm laying down I feel like the room is spinning and I struggle for breathe at night where I have to take a long deep breathe just to see if I'm okay.. do you think it's because now I'm on the 5ml as I was getting so much better and now I feel like I'm back to square one again xxx

Since february, due to massive stress at work I started suffering with anxiety. Expierienced all kind of intrusive thoughts, felt like I was going crazy. Doctor put me on mirtazapine15mg which brought little relief to my anxiety but started making me feel depressed and not myself. I felt numb. Gp stopped it cold turkey after 3 months and put me on fluoxetine 10 mg for a week then increased the dose up to 20mg.( I was on fluoxetine before for 7 years for OCD and never suffered any side effects). Before stress at work I was year free from ADs. Since stopping mirtazapine and starting fluoxetine I feel constant nasuea. It wakes me up in the morning, in the middle of the night and doesnt help me fall asleep. Nothing works on it. Tried antisickness tablets, ginger tea, hot water bottle, omeprazole. Nothing works. Today would have been day 19 on fluoxetine but due to side effects my doctor stopped it and told me to start mirtazapine 15mg from sunday. My side effects on fluoxetine were: extreme anxiety , it was burning my whole body, rushing, intrusive thoughts, feeling like Im going crazy, like Im not being myself. Felt like I was being brain washed.Was getting bad tremors, insomnia. I know that with ADs usually gets worse before it gets better but this was to extreme. Doctor told me that fluoxetine doesnt agree with me anymore. She said that sometimes fluoxetine hightens symptoms of anxiety and anxiety can get worse. Maybe its time to try diffirent antidepressant?

I was exactly the same as you. Laying on my tummy feeling like I was on a boat and like I was gonna stop breathing , horrible. We shouldnt feel like this at all.