Gained 15+ pounds by 14w5d

Ugh. I had worked so hard and got down to 134lbs. Since 7 weeks, nausea hit and exhaustion and I haven't been exercising, I'm eating what sounds good which is not usually what is good for me, and I seriously hate water, all I want is oj and milk and I mean all the time. I am feeling so depressed. I need to start exercising again, I am just still so exhausted and can't find motivation.