Have anyone on here been diagnosed bipolar?

When were you diagnosed? How were you diagnosed? Did someone have to convince you to go to the Dr or did you realize something wasn't right and went on your own?? Canopy triggered by a major life event? Is it more likely to be a diagnosis if you have trauma from your past? The long it goes untreated does the worse it gets??

Please help, I love him and I'm worried! I just want my bf back!!!

So my bf(28) has been not acting like him self! He's acted like this in the past but not to this extreme!! I think he's undiagnosed bipolar... His mom is bipolar, his Gramma on his mom's side is bipolar and schizophrenic among other things, and his uncle on his mom's side is too along with other things I'm not exactly sure what but I know he has other diagnosiss as well as bipolar. All of them are on meds for these things!

My bf had a rough childhood(both parents were very cold and both verbally and mentally abusive) and teenage life his parents put him into placement and we have children together and I've heard why his parents put him in placement and I wouldn't consider that to be the best choice, my own brother acted out in similar ways and was never put into placement...it just seems a bit extreme and knowing them and how they behave as grandparents overstepping I truly believe they were wrong and there could have been better ways to deal with a teen who acts out.

So I mean he has a lot of trauma from then. And 2 years ago we lost a close friend and it really bothers him still, which I get because my parents have both passed so I get grief! It's coming up on the 2 yr anniversary of our friends death, he went from what I would call manic and I think he's coming down from that! He just won't open up and talk to me he snaps so easily. He's never home. He's been saying really hurtful things about me and our relationship (lashing out) And if he is he give me the silent treatment, which isn't like him at all! And I found messages from him to an old fling that made it sound like he wanted to meet up as more than friends...and he lied about it. (YES I KNOW IT A FORM OF CHEATING EVEN IF HE DIDNT PHYSICALLY HAVE SEX WITH HER, BUT IF HE IS GOING THROUGH STUFF ESPECIALLY A MENTAL HEALTH ISSUE IM NOT HOLDING CHEATING AGAIN HIM!!) Then today he comes home in a mood I would call anger or rage and then just skips dinner and spending time with our children and goes straight to bed!!!?

I just don't know if I should approach his parents or just give him time like he's asked because of the anniversary of our friends death?? I'm just worried and everytime I try to talk to him he snaps and says he just has shit going on and wants to be left alone! This isn't like him! We have a life together, children, a baby on the way!