I'm 70 Female And Am Confusing A Lot Of Things,

I'm 70 female and am confusing a lot of things, forgetting things that are important, not being able to retrieve things from my memory that I know and have difficulty using the words I want when speaking with people. I've ALWAYS been very anxious and just sick of the usual responses, I've had complete blood tests and just about everything else doctors want to sell me. If anyone has any new thoughts I would appreciate it. Can stem cells help with memory. I do not want to purchase anything on line