New and looking to finally change my life!

Hi guys! My name is Charlotte, I'm 19 and I live in London.
6 Years ago I was diagnosed with Chronic Fatigue Syndrome and Fibromyalgia and from then my weight just piled on. Now I'm trying to get it all off and make sure it stays off!
I weigh about 18 stone and I'm looking to weigh about 12 stone. In about 7 weeks I lost 1 stone 5 pounds but put on 6 pounds in a week on holiday alone so I feel like I have to start all over again!
I hope I meet lots of new people and can get the help I need, as well as helping lots of people too! :)