Almost been a year. Possible trigger

I started ttc Oct of 2016. I got a positive pg test March 11th 2017. 3 days later on my birthday I started bleeding. March 15th I went and got checked. I had a chemical pregnancy and lost the baby on my birthday. This past year has been so hard. We have been ttc ever since to no avail. Here we are a year later, and I didn't even ovulate till CD24 when I usually O CD14. I am so upset. I don't think it will ever happen. 16 months of ttc. 1 chemical pg. 16 months of heartbreak.