My biggest worries about anxiety

Hello, i'm new on this forum, i have anxiety for 2 years, i can live with it but i have some question that worrys me very much:

1. My hands and legs start trembling very bad under stress and after i masturbate, is this because of anxiety or from other reason?
When i masturbate i'm not under stress and this is strange, why are they trembling? but after 10 minutes after i relax it stop trembling
Can anyone explain me why this happen, is it from anxiety too or another reason?
When i'm hungry i start trembling as well and very strange when i'm not under stress but when i make effort, whan i do sport or i carry something, my entire body start trembling, this worrys me very much because i think this is not from anxiety.
Is this from anxiety too?

I have also fasciculations and low memory

2.And my biggets question, i'm a little short, 168cm, all this symthoms trembling, fascticulations and anxiety in general affected my grow in height?

Thanks and sorry for my bad english