Had nexplanon 5 1/2years. Got it out Jan 14th had af 18th was 4 days late all negatives faint weird maybe positive feb 15th. Blood test 20th negative. Took 4 tests yesterday and today feb 28th&29th and BFP👀🙈 literally two weeks after af was suppose to come. I almost gave up thinking my body needed time to adjust from the bc and well yup lol going to call and tell my dr that negative was wrong and need another blood test or ultrasound done lol.. point is if you miss give it time cause mine are still little faint and sometimes your body takes awhile to produce HCG or you might ovulate later which is my guess for me. 6weeks today according to app but we will see lol