I know there are lots of QAs available on over training and shortage of breath, but I could not find specific answers to my doubts/problems. I know few things cant be decided over a forum and I may need to consult a doctor; just want to clear my doubts before I take any decisions.
I have been training from past 4 months and my training involves 45-60 mins of cardio (2-3 times a week) and strengthening exercise (5 times a week). For cardio I'm doing Spinning (indoor cycling) and I was doing good progress. However couple of weeks back while Spinning I was stretching myself a bit hard and at one point I felt shortage of breath and heart rate shot up and I felt faint and dizzy. Immediately I stopped cycling at that moment.
Now the problem is whenever I start cardio, I feel shortage of breath and breathing difficulty very soon and feel like my heart is pounding very fast though my muscles are not very tired. Because of this I have to slow down else I fear of fainting.
Is it because of over training? Did I damage my lungs or heart because of this? I'm bit scared to get back into hard training. Is there anything that I have to consider before getting back to training as before (I know doctor's consultation is one of it)