Weird Running

I went out to run on Tuesday and actually had to stop before I got to mile 1. I had such a side cramp, I just couldn't do it. Went back out yesterday, got another stitch (just after mile 1) and realized - it's actually my diaphragm. I did finish my 3 miles but it was not fun and I didn't enjoy it. So I'm wondering: am I having to acclimate to running at such a higher elevation? I looked it up. I went from an elevation of 62' to an elevation of 4,500'. I'm going to be interested to see how this resolves and what your experience is. If this is related to elevation, maybe you'll have a different experience. Because you're coming from a higher elevation - so maybe it won't impact you like it is me. Or - maybe it's not elevation at all and it's just that I haven't been running as much recently! I did run with my Garmin and the outside (pavement) path is actually a bit over a mile. I'm super pleased to say that, despite my stitch, I did 3.01 miles in 29m 40s!