ovulation help

Bunny • ttc 4 years with 2miscarriages. Rainbow BABY GIRL born 3/10/18💕🌈 Gorgeous girl#2 born 02/19/19💕💕 baby #3 due 03/01/21
so i got a positive opk on cd 15 which is the exact time i get my positive every month, but i also decided to take a opk cd 19 & it was positive! i didnt test in between so im unsure of those days but which positive should i trust? im currently on cd 30 & i thought i was 14 dpo. am i actually 10 dpo? or 14? i dont temp but im gonna start next cycle to avoid this again