How am I supposed to feel about this?

Just a quick short confession, in 2016 I was messing around with a coworker and you know we had sex every now and then whatever. During that time I was teaching myself how to skateboard and after it getting caught on a wire and i flew off, fell and tumbled. Shortly after that I had gotten my period. No biggie, (I didn't keep track of it at the time) but then it just didn't stop. I bled everyday for two months. I was scared to tell my mom but I eventually did ans when I go to the Gynecologist I had to go through all these tests. Then he tells me I had an early miscarriage. I was 18. I still don't know how to feel about this. The guy was an asshole and i guess the baby wasn't developed at all since i didn't need to do any extra procedure but I wanted someone to know and maybe give me an idea as to how I'm supposed to feel? Like i want to be sad about it but i really wasn't ready, it wasn't a good guy, and i didn't even know i was pregnant so i didn't get to develop an attachment.