quit birth control and now depressed and moody

I stopped taking my birth control pill about four months ago, ever since I have just been a mental wreck. I am usually a very happy person but, lately, I have been so angry, frustrated, upset and generally feeling pretty unhappy. I've become a really bad girlfriend reacting emotionally instead of just letting things roll off my back. This has resulted in several fights in my relationship- honestly, it’s ruining my relationship. Basically, my hormones are way out of control and its destroying my relationships and my own happiness. It was mentioned that I may be experiencing sort of postpartum depression because of stopping the bill after ten years. I am not interested in going back on the pill because I want my hormones to regulate themselves. However, I need to do something in the meantime to make my life better. I had previously been on a very low dose antidepressant; would taking this again stop my body from regulating its own hormones?
If anybody has experienced this, please let me know how long it lasts and if there are any solutions to my situation