I had a FET just over 2 weeks ago (5 day transfer). I tested on official test day 10dpt and got a faint (but very definite) positive on a FRER. I got positive (but faint) tests again on 12dpt and 13dpt. Clinic also got me to do a blood test on 13dpt but this is one which tests whether or not you have hcg rather than the level. This was negative although I did have some trouble doing the blood test so not sure if this might have affected the result. Based on faint lines/negative blood test, I was assuming this was a chemical pregnancy but then tested again and got a strong positive on a clear blue (15dpt). Now I just don’t know what to think! No bleeding/spotting but my worry is that the progesterone I’m taking would be masking the fact I’ve had a chemical. For anyone who has any experience of a chemical after ivf, how did you find out this is what had happened and when might I expect to start testing negative or to get AF?