I get it sometimes too, don't worry about it so much. Just drink heaps of water.
its better if you consult a doc so as to see where the prob lies & get it rectified asap..
If you blow your nose too much you might have burst some blood vessels within. If a few days later no more blood I think no need to worry too much.
Maybe heaty, drink more water. If problem persists, consult doctor.
Wish you best of health.
Why blow you nose?
Do you think it is a healthy habit?
Unless you nasal passage is blocked and interfears with your breathing, don't blow your nose. Don't develop that habit believing it is a hygienic practice. The mucus is there for your protection. Blowing your nose regularly remove that protection, and that "hygienic" practice will later cause chronic health problems.