Come on, let's go for great nightlife adventures

note: after a week of exams, I was so tired that I fell asleep in uncomfortable position on the sofa. Here the lucid dream:

I am in the garden and I'm searching for the something(I don't know what). Someone opens the door of the house and get out in the garden. I say to myself that this is a dream and I become lucid. I turn around and start walking but I feel a back pain, I try to ignore it but it's still hurting, it's so hurting that I decide to wake up. I woke up, put me in a comfortable position and tried to go back in the dream but it didn't work.