Sad =(

I did a 7 day fast a few weeks ago. It was hard, but I did it, was proud of my willpower, bf liked the leaner me. I don't know if there are any changes on the inside, but endometriosis pain lessened. There must be.

Today I'm back to the same weight I had prior the fast.

This despite a low-calorie diet and routine 2 hour biking sessions everyday.

Prior to the fast, I was losing 2 lbs a week.

I can't believe that this has happened. =(

Did I mess up my metabolism so badly that 2 weeks of careful diet and exercising cannot make me lose weight?

Someone give me insight please?