I was diagnosed four years ago with Clinical Depression, I have been taking Citalopram for a number of years now and I go through phases for what feels like months I can feel extremely happy and cant wait for what life holds for me but without warning the next day, I will be the most depressed, suicidal person you can meet, like right now and then theres times where I feel normal like I should.

I've never really thought about BiPolar before but researching some of whats wrong with me, I keep reverting to back the possibility of BiPolar II, how do I approach my GP with looking into this further? I'm sometimes good at talking to someone one on one but when it comes to this kind of thing my anxiety shuts me up.