I am sorry you are going through a hard time. Hormonal fluctuations can definitely mess with the mind, but if it makes you feel better men have them as well, they just don't have such visible evidence of it. For a lot of women the hormonal swings can be worse when they are younger and get better with age. That was true for me. If you are dealing with a chemical imbalance hormonal shifts can impact that

As to faith. I don't want to lecture or preach. But I will say this my own relationship with faith is tempestuous. I have found that I have more difficulty with believers than belief. If your faith is a defining factor for you then give yourself a chance to discover your God in whatever way he/she presents themselves to you.