Decorating room?

Question:Well I might be painting really soon and I already know what colors I want (light green on the walls and light blue accent color) but I really want a double bed. I have a single bed right now and I am getting too big for it. My feet almost touch the end when I sleep! But the problem is...I have bad allergies so I would have to get new allergy covers for the mattress..which are kinda expensive. But what should I say to my mom? Because I really think I need more room to sleep. Or do you think I could just live with the single for a while? Please help.♥

Answers:
What you do is totally up to you. If you think you can comfortably sleep on the single bed for much longer then stick with it. However, if it was me, I'd talk to my Mom about it. Just approach her softly and show her how it is when you sleep. Since it's so costly, you could suggest to her that it could be an early birthday gift, or something along those lines.

I think its kind of bad to sleep on a bed that's too small for you, just explain to your mom that it will be a good investment and something that'll you keep awhile. Good luck!