I am a barber. I would really have to see some photos of you before I could render an opinion, but;
1. There is nothing wrong with shaving your head - at whatever age - either because of hair loss, or simply by choice. A shaved head is a legitimate haircut/style to choose.
2. Even if your hair loss has truly begun to "show" there are a couple of "tricks of the trade" that I might be able to suggest so that you could have some fun with it and wear a couple of different, and very trendy, cuts on your road to a fully shaved noggin - but again - I would need to see some photos to make suggestions to you.
3. Bear in mind that male pattern hair loss often goes in spits and spurts: