Lost 85 pounds, but weight loss has STOPPED?

Options
Started in April 2013, and from then until April 2014, lost my 85 pounds.

In April of 2014, I lost an extremely close and dear relative, and in the almost 6 months since, I've only lost about 8 pounds, with a lot of bouncing up and down, 2 pounds up, 4 pounds down, etc.

I think there may be some connection between the depression I feel over my personal loss, and the fact that in spite of reasonable exercise and careful eating, somethng's not working the way it was before.

The only other issue in my life is a slowly failing thyroid, and I will be seeing my endo around Halloween.

Has anyone gotten past a blocker like this and gone on to get to goal? I'm at least 20 pounds from where I should be.

Thanks in advance.......