Some of your issues could be related to PKU, and like Sarah said they could go away or lessen with dietary control. It would be a good idea to contact a clinic in your area that treats PKU. If you do not know where to go you can use the clinic finder link above, go to http://www.macpad.org and click 'Clinics' under the 'Links' tab, or let us know where you are from and I am sure someone will be able to help you out. Once you find a PKU clinic they will be able to test your phenylalanine levels to let you know if dietary restriction is necessary.
Good luck, and if possible lay off on the meat for the time being as that is probably where you are getting the majority of your protein from, and protein is in general not a good thing for those of us with PKU ;).