morning girls, i usually post on maternal but its all full. i just put all my bbt info onto a site called fertilityfriend.com and i had a dip in temp on dec 13 thinking this was o day but per their site it states my o day was actually dec 15th. i was pretty sure that the dip was the o. this puts me at 7dpo and i thought i was at 9dpo. any help for future charting? anyone ever use this site?