@Bahsyla Could be the beginning of Burnout. I also would look into Overload, meltdown, and shutdown. Could be a low-level rejection sensitivity. You can communicate with close family, yet the next social levels are iffy. The next question is what are you feeling when you don't want to send a message?
@bonzo I do that sometimes too, especially when I'm nervous.
@Hobbs_Hawthorn @Bahsyla i am usually the opposite - ie talk all the time with no filter, but the rsd kicks in later and my head does a number on me about how i came across and how self-centred/boring/manic/crazy/[any negative thing] i must have sounded and no wonder no-one likes me...