Anxious & Exhausted

This last time I visited my psychiatrist he recommended I try a new ADHD medication. Ritalin..he still to this day swears that I don't need anti-anxiety or depression medications and I can control this on my own..Everytime I meet with him I feel good and ready to conquer..and now I feel back at square one! I take 10mg of prozac for serotonin and I take 10mg of ritalin (generic) daily to help with my anxiety...it's still not working..I'm able to focus more..there is no doubt I don't have some attention disorder..but I can't seem to shake this! 
I've been dry heaving every morning for two weeks..trying to get used to these medications and give them a reasonable time to "kick in"..I don't drink..do drugs..smoke cigs or ANYTHING...My appetite is nearly nothing now and all I can manage to do is drink water..not even sleeping right. I don't even work out anymore..
 
The reason I'm not taking too high of a dose is because I really don't want to be medicated to function..My doctor seems dead set on this guy Sydney Banks and that I can control it all..and I just feel like I can't...I try so damn hard and I just want to be myself again. 
 
Anyone have any positive comments for me? Words of hope or wisdom? I'm finding it harder and harder to keep pushing forward before I feel like collapsing from being exhausted and anxious..