Hypothyroidism With Polycystic Ovaries

When I was sixteen, I started to display all of the symptoms of Glandular Fever. Two years went by until the doctors finally diagnosed me with Hypothyroidism. At this point, my thyroid levels were that bad, that I looked bloated, had ballooned to a size 18 and became very ill. As you can imagine, being 5'2 the weight started to affect my back/ joints etc. which just added insult to injury.

The doctors started me on 150 micrograms of Levothyroxine, which was then increased to 200. I went down to a size 10/12 and felt happy, healthy and fit. I had so much energy and found myself wanting to work out once, sometimes twice a day. The positivity came from nowhere, my skin felt great, my hair felt strong and the weight seemed to melt away.

I'm now 22 and I am feeling depressed, tired all of the time, I have no energy to work out and I find myself forgetting things all of the time. I find myself asking how I've ended up back where I started. I'm still on 200 micrograms of thyroxine - but I've now been diagnosed with Polycystic Ovaries.

I just feel like I'm getting nowhere, I'm back to a size 18, I don't feel confident, I just feel like this condition is destroying my life and there's nothing I can do about it. I try to push myself to exercise, but I just don't have the energy. I work full time and by the time I get home I am far too tired to move. I go straight to sleep, sometimes without eating. So how am I putting on weight?