Losing Weight

I was diagnosed with OCD a few months ago. I have always been "big" but not "huge" if you know what I mean. And for the past few weeks I have really tried losing the weight. I really only need to lose about 30 or so lbs. it's been 61 days since I have had soda, candy, chocolate, fast food, ate at restaurants(except once), chips, or eaten really anything unhealthy. I eat a good amount to keep myself full but not to much. I avoid carbs after lunch. I drink 5 glasses of water a day. (And yes it is exactly 5 everyday, the OCD, yeah). I exercise at least 20-60 minutes a day. Usually 20 on weekends and an hour weekdays. I hate walking and running. So I do the usual sit ups planks, but I make sure to change it up every once in a while. I do yoga for 10 min two times a day. So I would say I am pretty active. So, I still can't understand why I am not dropping any pounds. I'm not expecting 20 down in a month but to work as hard as I did and not lose any?!? I was obsessive over my dieting and exercising. The only thing I can think of is that I'm taking birth control pills. I think their called Juniel or Junel. I asked my OBGYN and he said they shouldn't keep me from losing weight as long as I ate a good amount of food and drank plenty of water. I am not giving up. And I k ow this is long, if anyone's actually reading this, thank you, I really just need advice. Hopefully someone can help or give me advice.