Help. Miscarriage/Chemical

Kendra • Happily Married!! Two beautiful little girls :)
I got my first positive Saturday the 11th very faint but it was there. Every test after that was also faint. They never got much darker. Af is 5 days late and today I started to bleed. I'm pretty sure it was a chemical or miscarriage. What do I do now and when can we start trying again? This would be baby #2 for us. I should have been around 5 weeks.