Hi, all. I'm wondering about everyone's experiences with implantation cramps/side stitches after FET. I recently had an FET of one Day-6 blastocyte, and later that same afternoon I got a HUGE jabbing pain in my lower left uterine area. It came out of nowhere and made me suck in my breath and involuntarily shout "Ow!" It only last for about 2 seconds, and it only happened once. [NOTE: in a previous miscarriage cycle, I definitely felt implantation pains, but it felt more like a pinching then. Also, I know that this was not ovulation b/c my ovulation was suppressed during the FET cycle.] Please note your experiences, if you would, telling: --What day and stage of frozen embryo(s) you implanted (ex: day 3, 10 cell; day 5 blast graded 4AB, etc.) --When you believe you experienced symptoms of implantation, and what those symptoms were. I'm just wondering if I really *could* have had implantation the same day as my FET. It was 6dp retrieval, so I don't think it's out of the question (since normal implantation can happen anytime from day 5 onward). Note: my blast was already hatching due to the genetic screening tests we'd done (the lab had to break through the zona to retrieve the cells to biopsy). FWIW, the embryo was 97% thaw, 80% expanded at the time of transfer. Any opinions would be greatly appreciated!