Should I feel ashamed of this?

16M I went to sleep in the afternoon in my room to sleep more comfortably. I was only wearing shorts/bermuda shorts without underwear.

When I woke up, my father was passing by the room and I was sleeping with an erection while he was there. 💀 and because I wasn't wearing underwear, my penis was very visible

And I know my father saw that, should I feel ashamed about it?