So I need help figuring out what I should do, so I am 16dpo and 2 days late. We have been trying since we miscarried on 2017.

I'm not sure the circumstances of your miscarriage, but with mine my doctor said I'd want to get into them for testing and monitoring asap the next time I get pregnant. If that's the case for you, I'd go ahead and test if you're 16dpo and a couple days late that way if it's positive you can call the doctor right away. Sorry about your loss and good luck