Dissapoointed ! :(

I'm down this morning :( I'm 10 dpo and  got a BFN. I got AF pains 7-9 dpo , tiny tiny bit of brown CM. Headaches. No sore boobs. :( please tell me something, I quit the birth control last month but I'm sure I ovulated the 31st of jan. As opk said so and I had ovulation pains.