Hi, I am Dr. Shreyash Mehta, MD community medicine.
I hope my answer will help you solve your query
As you told that you are recovering from a mild flu saw blood in the mucus Sunday morning.
By Sunday afternoon, you were seeing short strands and clots of blood, as well.
You visited to Urgent Care, and the Dr. confirmed no serious issue, put you on
Tetracycline for 10 days to prevent a
sinus infection.
It for you that bleeding had stopped as of this morning but there was bleeding following
sneezing.
I would like to know what is your profession? You should wear a mask to avoid contact with pollutants. This would itself decrease the
allergy and sneezing.
This may also be due to dryness of nasal mucosa. Applying isotonic saline nasal drops should help you.
You should take appropriate rest. If you have
fever or excessive bleeding then you should consult your physician.