Over the past few months I’ve noticed a bit of change in my memory or is just anxiety ?

Hi I’m 31 years old and recently I have found it difficult not to so much remember things that have happened but not really knowing how long ago, for example if there was a show that I watched 4/5 weeks ago and I tried off the top of my head to remember how long ago it was on tv I would find it difficult to remember it quickly, I do suffer from some intrusive thoughts and brain fog, My mood is also not great either as if my intrusive thoughts are telling me I can’t be happy, I cry at nights sometimes because I’m scared that I’m losing my memory, mind or fear of talking to someone