dealing with miscarriage😞

last month (on Valentine's Day) my boyfriend and I discovered I was pregnant - I was only a few weeks in  but nonetheless. i was very nervous because of financial reasons but a part of me was excited just thinking about him/her. long story short, a week later, I ended up miscarrying my baby at almost 7 weeks. At first it just hadn't processed with me, that any of it happened or that I'd never be able to meet the person who was a part of me for a short time. But now it's starting to really hit hard.... I can't stop thinking about it. I feel so lonely and depressed. My boyfriend has been very supportive but I just don't know what to think. I understand it wasn't very developed but I can't stop imagining how happy their presence would make me feel. 
if any of you ladies have experienced a miscarriage and have advice, I would certainly appreciate your time.