Ok i would start your opk in the next day or so. Never use first morning wee use your mid morning or mid arvo one. Make sure you havnt drank to much b4 had either... You need to ensure you get a line the same as the control line or darker b4 its a +ve opk... As with your cm it is still probably not what they say as fertile cm but i would bd every second day or so thats what worked for us... Plus temping and OPk... All the best and feel free to ask anymore questions....