Death is a really touchy subject for me.
Speaking carefully, I'll just say that I'm sorry for your loss, and that death is part of the natural cycle of life. It's unpredictable, and I hope you can keep these thoughts about death dawning upon you in check better as time goes on (I wish it were that easy, but I digress).
For me, the good news for you is that today is probably the worst of these feelings since you're fresh off having attended something that is, like you said, an intense, close encounter to death. Tomorrow will hopefully be better than today, and so on and so forth! :hugtackles: