First of all welcome to DV! Its always nice to see a new face here!

Responding to your questions, Im going to be very general.
1- That never happened to me, generally in my dreams, the objects are not in the same place or they arent there at all. I Didnt understand how you couldnt do a Reality check. Try to close your nose and try to breathe through it. Thats the best RC for me and it never failed. It might be an OBE, but I really dont know, I will pass that to a more experienced Lucid dreamer

2- The sound that you heard its definetelly a Hypnagogic Hallucination. You were apparently trying a WILD. You heard the sound because you were about to enter sleep paralysis congrats But those things don't always happen (for me), it really depends. So it is a good thing since that when you enter sleep paralysis you can transition into a dream while remaining counscious. I think that you should do a little research on WILD and sleep paralysis.

If you are new to lucid dreaming and if you had those results already, I think that you can have lots of progress on lucid dreaming.