Hey Ladies! Just wondering if you can help me? before today my chart said i ovulated on day 13 which i did. I had an ultrasound done and he said that i had already ovualted for this cycle. Now the chart is saying day CD23. I was due for my AF on Monday and it still hasnt arrived. I have done 3 tests DPO 10, 11 and 15 and they where all BFN... Do you think its worth me getting a blood test? Has this happened to anyone else? What happens to your chart when you are pregnant? does it stay high or go low (like when AF arrives) https://www.fertilityfriend.com/home/325a4d Thanks Ladies!!