I realise I might get some stern words for this, but after a combination of a doctor who told me I had a clear signal of sleep apnea in my pulse oximetry before changing his mind, then a sleep apnea charity telling me (based on three nights of breathing/oximetry tests) that I definitely have sleep apnea, then the original doctor telling me that the charity were talking rubbish and that I'm a hypochondriac and to go away, I decided I needed to resolve the issue, so I bought myself a CPAP machine, with the idea of running it on low pressure (4cm H2O) to try to look at my breathing overnight. The two times I've used it, I've woken up from deep sleep, unable to breathe until I removed my mask.
The first one I accidentally erased from the machine, but the second one I am looking at on SleepHead today, and my interpretation (I think?) of it is that it looks like the machine must be going mad and blowing lots of air at me all of a sudden, which is what is startling me awake in a breathless panic. Below is the flow rate graph from SleepyHead. Am I interpreting this correctly? It seems like the flow rate just spikes in a way that wouldn't likely be caused by a problem with my breathing?
I appreciate the right course is through a doctor, but I really feel that I've run out of options, and the original doctor was so weird about it all, I really need some resolution on this and am willing to take the risk of experimenting. But I'm just trying to work out if this is a sign of something potentially dangerously wrong with the machine I've bought.
Thank you all in advance.
![Image](https://i.imgur.com/b7Lk5h3.png)