Dude,
You do
NOT need to see a cardiologist.
You do
NOT need to take a stress test.
You do
NOT need to keep a bottle of NTG on you.
That is CRAP advice. Don't follow it.
DocIllinois hit the nail right on the head.
THIS IS NORMAL !!!!!
Your blood vessels, arteries and capillaries are dilated from the exercise due to the demand of the large muscle groups. This usually last for an hour or two after a vigorous exercise and results in low blood pressure as your arteries are more relaxed and your capillaries are more open leaving more blood volume in your muscle.
Now that you have your cough/bronchitis figured out, and I'm sure you're close to being done, or are done with your amoxicillin, in a few weeks, you'll see your B/P return to a somewhat normal range.
I know you have your hiring process going on and want/need your B/P to be in a "normal" range, here's a GREAT piece of advice ....
DON'T STRESS ABOUT IT !!!..... IT'LL BE FINE.
You stress about it and it will only increase your B/P ... and you don't want that, right?