Once the blastocyst reaches the uterus, it implants into the uterine lining. This process is known as implantation and can often cause what are called implantation cramps. I was snorkelling at the time so very aware of my body in the water. Implantation Cramping: How Long Does It Last? I just knew straightaway what it was and sure enough 5 days later when I got home from the holiday I got a BFP.。
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