Creel, darling, you are not using your friends. Everyone needs a little support from time to time. Perhaps you will soon be able to repay them for their kindness.
The fact that you worry that you might be accidently using your friends shows that you are not. A person who truly uses another doesn't care about the other's wellbeing.
I think you need to calm down. You are not unworthy of their kindness if that's what you think.