Why does my nose bleed in the morning?

In the morning I usually wake up and have to blow it. (It runs in the family) however, I also occasionally have blood that comes out, and more recently quite a lot. I have hayfever which I know will obviously effect it. But It doesn’t seem that normal to wake up, stick a tissue in your nose and have blood on it after.
By the way, I don’t do drugs, I don’t sniff anything, and I hardly ever drink, and when I do, it’s in moderation. any feedback is greatly appreciated.