am i pregnant

We had sex on the 10th day of my cycle and we used condom. It didnt break and we checked it with water and it didnt leak. I think i ovulated last April 26which was my 13th day in my cycle Because i had egg white cervical mucus discharge. Yesterday, i noticed brown blood mixed with my cervical mucus. Its very small. Yesterday was my 10th day after ovulation and im not sure if it was implantation bleeding or not. Am i pregnant? Please help. I don't understand if i am pregnant because i wasnt producing any cervical fluid in my 10th cycle and we used a condom and just had sex once.