I have been on Doxy for about 6 months now to treat adult acne. ...

I have been on Doxy for about 6 months now to treat adult acne. It works brilliantly for my skin which is why I am hesitant about stopping it, if I do forget to take it for a day or two the oil and spots come back with a vengeance. I discovered straight away to take it with food, taking it on an empty stomach caused nausea and dizziness, but I don't get this anymore. The problem now is I find myself feeling more and more depressed, looking back Ive been flat for quite a while now. I seem to pick up every little bug going round and nothing makes me happy anymore. I thought it was just me, but reading about it here, makes me wonder if its the Doxy??