Hey guys I've recently had a serious problem with whey protein shakes. I've been using ON 100% whey for like a year with no problem for the last 6 months or so with no issue, but about a week ago that changed drastically. I started getting extremely nauseous a couple hours after lifting and 3 hours almost to the minute I vomit big time. It took me a few days to pinpoint what was causing it but I realized that if I don't drink whey it doesn't happen. I switched to a brand I used before the on yesterday and had the same issue. It's not that whey is a derivative of milk cause I can still drink milk with zero problems. I haven't changed anything at all and classically have a very strong stomach ( haven't thrown up in 15 years). My questions are what may be causing this and if I have to stay away from shakes how do I get enough protein post workout without them. I'm thinking maybe chicken and cottage cheese pre workout so it starts getting digested during and after. Thanks in advance for your help.