I'm so sorry to hear you're feeling low! I have two thoughts that might help you out.
1. Are you on the pill? I was on the pill for two years when I realized I'd been feeling dead inside. I'm not sure how best to explain it, but I started to feel really low. I compared notes with a few friends who also felt the same symptoms. We figured out that it was a side effect of the pill. So, I've now been off the pill for two years and I'm only just starting to feel like a human again. I'd recommend doing some research of your own and maybe consulting your doctor, but I reckon you may be feeling low because of your very real situation you're in, but also because of a hormonal response to the pill.
2. Would you consider joining a church? I am an active member of my church and I am constantly busy. I've got tons of lovely friends, I attend a lot of fun events, and I feel like I have a solid support system. You might not be religious, but I would highly recommend considering visiting church purely for the support. If you do, find a church that you know has a lot of newly married couples who are around your age.
I hope you're feeling much better after you initially posted this. I know it's been a few months
Lots of love to you!