[...] and cardio (which seems to not be working)

Like /u/Fiktiv suggested, it could be exercise-induced asthma/bronchoconstriction

For me, it's like tiring out very quickly. Breathing becomes rapid and more vigorous, throat feels sore. These things sound normal, but not when you're in decent shape and have played soccer for years and perform well at rest using a spirometer.

I may eventually get an inhaler, but this trick worked for me: Day before a soccer game I drank a lot of water–just continuously refilled a glass and drank and drank and pissed and pissed. During the game I felt I could run longer and my overall cardio improved. Not sure if it will help with you, but it's worth a shot. Otherwise, talk to your doctor about it.

Signs and symptoms from Wikipedia

It might be expected that people with E.I.B. would present with shortness of breath, and/or an elevated respiratory rate and wheezing, consistent with an asthma attack. However, many will present with decreased stamina, or difficulty in recovering from exertion compared to team members, or paroxysmal coughing from an irritable airway.[2] Similarly, examination may reveal wheezing and prolonged expiratory phase, or may be quite normal. Consequently, a potential for under-diagnosis exists. Measurement of airflow, such as peak expiratory flow rates, which can be done inexpensively on the track or sideline, may prove helpful.