Traumatic breathing is one of the first things you will encounter, and  one of the first you will overcome. I thought I was going to die when I  started training, even calling my Mom to say goodbye just in case. I was  winning trophies a year later, lol. Of course you want to be cautious. A  raw throat or irritated lungs, the taste of blood in the mouth - though  not necessarily unusual - may make you more vulnerable to some airborne  pathogens. Fortunately for you the weather is warming and the humidity  will be easier on your lungs, though there is less oxygen in warmer air  and less muscular blood flow to carry it (due to shunting of blood to  the skin for cooling). Just take it easy and allow your body a chance to  adapt. As long as you do not drive yourself to failure, your body will  reward your courtesy with continual improvement, probably for at least  another 10 years if you stick with it and don't run too far too soon, or  too fast.