Getting dizzy in low oxygen environments

Other conditions
1

Before I begin, I am 26 years old, athlete, and software engineer(so I sit a lot but also do sport).

So I had a neck pain 3 months ago and it was not healing but didn’t give too much attention. It was around 1.5 months ago that I started getting dizzy and losing focus. The pain was still there. I thought that my neck pain was the reason for this. I started doing physio and after 3 session I feel much better and the pain is almost going away.
However after the third session, although neck wise I was feeling good, but I was dealing with some fast heart beats and tiredness all the time. Recently, I was in a room with windows closed, I had difficulty breathing and was going to faint, I went and opened a window and started drinking water. I had this same issue 1.5 months ago so I am guessing it’s not related to the neck. It’s scary, I’ll be talking listening and suddenly I feel I am losing focus.

I am guessing I am not receiving enough oxygen and I feel that. One of the reason I am thinking about is my nose. I feel it is very bad and I need to check it. Whenever I play sport it always runs water like fluid. Whenever I eat, I feel liquid in my throat. I am guessing it is filling up my lungs and whenever I sleep I am not getting enough oxygen. I want to check up my nose eventually. Can this be a possible cause? Physically I don’t feel I have other issues.

Anyway, I will also do blood test if I have something. I would appreciate if you have any opinion in this.

2

If I were you I’d get an urgent appointment with your doctor

3

These sound like panic attacks. Are you an anxious person? You could try yoga and also try, say twice a day slowing you breathing and exhaling and breathing as deep as possible. for say 3 breaths.
Your nasal problem sounds like post nasal drip made worse by anxiety. Try an OTC saline nasal spray,but not a steroid as that can make your nose bleed.
Your doctor may want to check your BP .

4

I think the problem was my sugar level has dropped a lot. I was feeling tired the whole time for 3 days. Yesterday ate sugary foods and suddenly I got all productive. Let’s see the upcoming couple of days.

5

But I agree, I am worrying a lot maybe making the situation far worse.