Hello im 25 with 2 girls. I've been trying for number 3 for about 6 months now. I had a positive opk on the 4th and 5th, had intercourse on the 4th then negative opk on the 6th and 7th. I experienced light pink bleeding on the 8th which was heavier than spotting but lighter than my period. That was 4 dpo or 5dpo depending on which day i ovulated and i had cramping as well. My cervix was low closed and firm from the 6th untill today where my cervix is high closed and firm. Im not due for flow untill the 19th. Could i have implated at 4 or 5 dpo?