I'm so sorry for your loss. You and your family are in my thoughts and prayers.
I've had one MC, between my first and second. Two days before Thanksgiving 2004 the spotting started. Heavy bleeding started during the night and I "lost" the baby around 3 in the morning. There wasn't really anything left to see by the time I had my ultrasound the next morning. I was 7.5 weeks. I knew something wasn't right from the beginning, but just tried to convince myself I was over-reacting. Turns out I wasn't.
We waited a cycle before trying again and got pregnant the first cycle afterwards. I love my son with all my heart, but I struggled for awhile with the knowledge that, biologically speaking, it would have been impossible to have both him and the baby I lost. And I had a lot of guilt too because a few hours before the spotting started I'd read an article about the pros and cons of having babies less than two years apart and panicked - believing that it wasn't something I could handle and wondering if we'd made a mistake not waiting awhile longer to get pregnant again like we'd originally planned. But for me, not knowing the baby's gender was the worst. I refer to the baby as a her, or as Baby Independence, which is what we nicknamed her when we found out we were pregnant (my due date was July 11th) and before my daughter was born in October (after three boys), I think part of me felt like I had lost my only girl. But time heals most wounds and while I think about her occasionally now, remembering doesn't hurt the way it used to.
And you're right, it's not talked about nearly enough considering how often it happens. Please feel free to talk to us if you need to. One thing that amazed me when I had my loss was finding out how many women around me had lost babies but simply hadn't talked about it.
I don't know if you're at all religious, but there's a devotional a friend gave me (who had her second or third miscarriage around the time I had mine) called Grieving the Child I Never Knew by Kathe Wunnenberg that helped with my grief journey.