what shld i do

Caitlyn

so i ovulated later than i think i normally do. definatly a postitve in opk stick...first month using them. i ovulated day 30 of cycle...and avarrage cycle normally 34/35th day . very regular...im currently at day 39. did test uesterxay BFN but technically its only 9dpo isnt it?...after 15 month ttc cld this be it? when shld i test again