Hi Oriana,
Take my word my short term memory has gotten really bad over the past few yrs. since I had brain surgery and they removed all of my right hippocampus which is one area for short term memory and learning. I've been told to do a lot of math, word search puzzles as well as brain teasers to help better my memory.
What concerns me is how you have mentioned that you get out of bed walk around and still feel like you are in a dream. I'm no neuro but it sounds like you may be having complex partial seizures or possibly a sleep disorder like sleep apnea. You should call your neuro and let them now what's going on. a.s.a.p.
Here's wishing you well and May God bless You!

Sue