Hi all, I'm new here so not sure if this belongs here, if not sorry

I will try to describe it shortly.
Throughout the day I forget things I have done and that I should do, for example: I contact client about some issue on the start of the day, later on if I get asked, if I have contacted such client, I wont remember, maybe after 10 minutes the thought pops up in my head. (unless I try and quickly search for the info if I did contact that person)
or let's say that I have lived in one city for quite a long time and someone asks me the name of it, I won't remember.
These kinds of stuff are really embarrassing (not to mention not remembering what people told me, and asking the same questions later over again)

I'm only 25 yrs old, do you think this might be some sort of Alzheimer's?
My guess is PTSD, making my hippocampus not function properly.
I have diagnosed with PTSD myself though, my DR says it's not that because I don't get flashbacks and panic attacks. So I'm not sure..

I'm taking SSNRIs, nootropics, ginkgo, and a bunch of vitamins.

I know this is probably hard to guess just like this, but I still would be kind for any kind of advice, what to try or which direction to head.