is this bad?

I sleep on the couch with my grandmother on the other side every night. I'm 13. I don't have a lot of space and we have been staying at my grandmothers and I have a room there but I'm scared to sleep in there and feel really uncomfortable sleeping in there. I have a bed at home that cost 1000(the mattress costed 1000) dollars but we only really go there during the day. So what do you think?