This might persist for a while, don't let that bother you. You are 100% fine, you're just experiencing some residual effects which will go away in time. 2 days is a very short amount of time, your body needs more time than that to regain chemical equilibrium-- but it definitely will happen.
In the mean-time, don't stress out about the experience too much. Take some time to relax, cut out all drugs (even pot) for a while, and just regroup your psyche and process the whole ordeal.
It's quite likely that you'll experience some post-traumatic stress: that's a completely normal reaction to such a situation. It's really important to share your feelings about the experience with someone who won't cast any judgment; it's not healthy to keep such a powerful experience bottled up inside-- you need to share your thoughts about it with others.
I wish you the best.