How long until BFP?!

Wanda
Hey Ladies! So I told clomid 5-9. DD on days 12, 14, 16 and 18. Don't know if/when I ovulated. Feeling bloated and slightly sore breasts. Today is day 26. Took a test today and got a BFN. AF due by the 16th, but I'm not sure cause my periods are irregular when not on birth control. How long do you guys think until I might get a positive test?