I am currently 13DPO today / CD 33/31 so my period is late. I have taken a 10mül tests every other day and have gotten negative throughout. I have not had any menstrual cramps at all only what can be described as a twinge in my right pelvic area. I have been checking my cervix regularly and it has been high since I had gotten my second peak on 15th of Jan. It has been also leaning towards my bum or curved/ tilted at the top so I couldn't really feel the opening but it doesn't feel firm or soft it's in between. I had gotten two peaks in my cycle using CB OPK before I had ran out. I had b'd on 2,3,7,8,9,10,12,14,15,16 of Jan. Got my two peaks on 9th and 15th of Jan so I made the most of the high and peaks. I have been getting cramps in my pelvic area rather than my stomach which I would be used to. Other symptoms I have had include sensitive nipples, and sore when lying or checking my breasts which I never get before AF, my areola is darkening slowly. Had the usual headaches, backache, feeling hungry but not eating as much, bad mood swings and fatigue but my CM has been milky/watery after predicted O. My question is has anyone had these symptoms and gotten a BFN at 13 DPO and still got a BFP later in the cycle? Many thanks!