Overloading Memory?

[Enduring Epilepsy]

I really need some help here...

I'm having a problem that my site http://www.enduringepilepsy.com is overloading the memory on my cPanel. It's causing the site to either 1) load very, very, very slowly or 2) eventually have the server reach it's resource limits and have my site become the white screen of death.

I've been looking into what could be causing this and am stumped. I have updated all of my plugins. Deleted those I'm not using. Tried changing my minify and cache settings. Nothing seems to be helping...

The site is crashing for a half hour every day. I don't know what is causing it. So I'm posting here (and emailing Google PageSpeed too). I hope someone can offer insight. I would greatly appreciate the help! I gotta find out where this is coming from...