Why does it feel like damage got amplified since last patch?

I didn't play for about two weeks, and when i started playing again a few days ago, it felt like EVERYTHING kills me. Last time i felt so squishy was in pre-season when you'd get one-shot by anything with a moderate amount of burst at lvl 2-3.

Seriously, what happened? It feels like i die from collateral damage in teamfights, i get sneezed on and i die. Towers crumble like paper. Even when playing tanks i feel squishy. It feels like everyone got a +20% damage hidden buff.

Last month has been very exciting with the new meta shift, especially in the botlane, but also other roles and lanes that are open to new champions and possibilities, but at the same time, i really wish i'd stop blowing up so easily.

I doubt meta shift is the sole reason for the overall feeling of squishyness (or increase in damage) so what happened?