Well I haven't changed my diet lately and I've never had these symptoms before so I don't think it can be MSG.
And my acne is one of rarest types you can get so I'm seeing essentially the best acne doctor in the world in London (good old NHS

). He settled on this treatment after loads of other stuff, because I reacted badly to prednisolone/rocketin. I've actually done a hell of a lot of research on the subject and there's been no scientific link between diet and acne, let alone good bacteria etc.
Thanks for the help anyway mate, much appreciated.