Depression

I am posting this asking for advice based on personal experiences and helpful/constructive feedback. So if you are responding to this please be kind, I am not looking for judgment, ridicule, or people telling me what I am going through isn't real.

I have ptsd due to events that have happened in my life. I also think now that I may also have depression, possibly stemming from those events. I would like to know where I can go to get screened for depression and possibly bipolar. The last few years I have gotten sad on and off sometimes for no reason. I am not suicidal nor have I ever been but sometimes it goes away and I'm happy at a normal level for a while.

I'm also wondering if anyone has taken any medications for depression? No judgment here. It scares me to think about taking antidepressants but I am at the point where I need to try something to help.