Hi there - you don't sound crazy at all, no need for that. I haven't been through what you have (so apologies for anything that sounds off!) but a very close friend of mine did very recently. It touched me so much that I cried for her when I went to my 12 week scan and saw the (healthy) heart beat of my baby. I was so unbelievably grateful that my pregnancy was going well while also totally heartbroken for what had happened to her, the scan just made her experience all the more real for me. I left the hospital thinking of her. I emailed her as soon as I got home to send her more love, etc. I cannot imagine what it is like to go through this.
You are allowed to be sad and to grieve for as long as you need to. There's no time limit or textbook way to cope. We do the best we can, we just do. And for today, just for today, being sad, crying is the best you can do.
I often find weekends harder when I'm down. Saturday nights are supposed to be fun, I always tell myself, and not only do I not have good plans, I am miserable as hell. But in the end, I find that letting myself go helps me feel a little better later or the next day.
If I was to give advice - please feel free to ignore - is take care of yourself, don't push yourself, be gentle with yourself. When you are ready to stand up, do something that makes you feel better: tea, a feel good film (I have some suggestions if you need some), spending time with a partner (you don't mention a partner, did you go through this with someone who can understand?), a comfort food dinner, a long phone chat with a supportive / understanding friend or family member.
Take care & I'll be thinking of you lots tonight x