Did Something Happen to Braum?

I've been playing Braum as my main for quite a few months now, and everything was going swimmingly. I would almost always dominate the other ADC and Support and would be a major contribution to the team late game. However, since the preseason update has come out, I've been feeding like crazy (unintentionally, of course). The removal of mana pots made Braum's early game difficult, but I got around that by learning to conserve my mana. Now it just seems that I die much quicker than I used to before the update against any ADC or support combo. It almost feels as if every champion's health goes down slower for some reason, as if Riot removed all of Braum's armor in secret or something (obviously not the case though :P). If anyone has an idea why this could be I would really appreciate it! I don't think that I've just been sucking because I've been playing mostly the same as I always do. So, I'd be grateful for any responses ^-^