Have you started any new medications recently? When my Mom started showing signs of dementia, she was a very avid computer user, especially with email. She started saying she was having trouble with the computer, and had people come out to fix it. When they couldn't find anything, she said they didn't know what the problem was. She would laugh and say it was probably the "user." Actually, she was correct...that is when I really started noticing. She started getting lost in the car. My Dad helped hide her confusion, but then one day she had some problems from not eating, and it landed her in the hospital. She wouldn never let me near the bills, and I'm certain it was because I would find out about her confusion. Sure enough, I found late bills (not common at all for my Mom!) and unpaid bills. Then she started forgetting how to cook. Simple tasks like grooming and getting dressed were very cumbersome.
I think you should get a thorough check up from your doctor, and talk about the issues you are dealing with. Maybe it's a new medication or maybe you have something such as a Urinary Tract Infection which if not treated, can cause memory issues. So please, get checked and let a professional start helping you work through your symptoms to find the true cause. Take care and keep us updated.