I think I solved the headaches

So I think I solved the headache situation as I have now had 2 headache free days. I hope I am not jinxing myself. About a week and a half ago I met with my therapist again and once again she mentioned using an SSRI (a type of depression med) for my PTSD (post-traumatic stress disorder) She felt it would give me energy and also it had a side effect of weight gain. I finally said well lets just give it a shot and see. These meds you cant just start at a dose, you have to build yourself up. She wanted me at 20mg, that is what she starts people at. I took 5mg for 5 days, then 10mg for 5 days, and the 20 mg. On the 10 mg I was feeling the best I ever had, with lots of energy. After having one of the worst headaches on Sat night I sat down and thought of what had changed. I had slowly weaned myself down from my anxiety meds and my pain meds and I didnt think a rebound headache would last this long. Then I realized that the time the headaches started was the time I went from 10mg to 20mg on my anti-depressant. I looked up the side effects and discovered that headaches were a side effect along with insomnia which I had recently developed and orthostatic hypotension (blood pressure droping when standing up and getting lightheaded), also something I recently developed. So Sunday I went back down to 10mg and I have not had a headache since. and the insomnia and hypotension have improved. Hopefully I remain headache free. We'll see on Wednesday at my next appointment whether she wants me to stay on this or switch.