I'd like to give a heads up that this can and may come crashing down[1]. The 'Dark Night of the Soul' is a very real phenomena, and it can happen out of nowhere -- just a normal meditation session.
I'd suggest giving a search to 'mindfulness' and 'mental distress' or some such, if you continue on with this. It is really helpful to find a framework -- like Buddhism or Raja Yoga (https://en.wikipedia.org/wiki/R%C4%81ja_yoga#Comparison_with...) -- before diving too deep, to give you something to fall back on when it happens, otherwise it can result in quite unpleasant, hard to overcome and understand situations. Edit to add: The specific framework doesn't matter as much as having one at all (Christianity/Islam/Buddhism/Yoga/etc.).
[1] I just found this article but it seems a decent overview to me: https://ronyabanks.com/the-meditators-dark-night-of-the-soul...