I Am Getting Frustrated

I am getting frustrated with my plateaus. It's becoming quit annoying. I haven't really lost any substantial weight since August. In August I was at 123 pounds or something like that and now I fluxuate between 118 and 112. That just doesn't make sense to me. Shortly after Christmas I weighed 208 but now I am back up to 214. So I am just getting sick of it. I want to be below 200 so bad. If I could just get down to 180 I would be happy with that. Hopefully I will start losing weight some time soon. My doctor keeps saying that my body is just playing catch up and I have to wait it out and increase my water and protein intake. So if any of you have any suggestions on how to keep my spirits up please post them here.