Ipawa,
I am so very sorry to hear of your loss. You are not alone. I wasn't as far along as you, and I didn't have triples, I had twins. Well conjoined twins. Found out around week 9, lost them at week 12. Went through 3 ultrasounds (2 very intensive ones). And all I could hope for was that by some miracle they would split apart, but they didn't.
It is very normal to be emotional. Your body is going through a lot of hormonal changes, and then you are dealing with the loss which is emotionally draining in its self. You need to grieve. As long as you are not hurting yourself or planning to hurt yourself then crying, feeling depressed and all that is normal.
And don't feel bad about your boyfriend appearing to be doing better than you. He is just trying to hold it together, and mainly for you. My husband did the same thing. Was very calm, stayed upbeat, handled all the stuff with the hospital and funeral home (we had our girls cremated and put in a little urn), he was a rock. And then about two months later when I was starting to find my normal again, he had a break down. Men take it differently anyway, but they will try to act like it's all ok, even when they are really hurting on the inside. So don't think for a minute that he is not hurting too.
As far as it getting better, for me I had to deal with the guilt of feeling like I should have done this or that, or if I wouldn't have done this then they wouldn't have turned out conjoined. But it is a long process (been 7 months for me). Just have to take it one day at a time.
If you want someone to talk to you can email me: mochabanana04@yahoo.com. I would say call me but I'm a bit leery of putting my number on the message board, but could give it to you in a private email. My name is Anna by the way.