@ivfgoodpregnancy: After a Day 5 transfer, the blastocyst usually remains in a free-floating state for about 1 to 2 days while it hatches from its shell (zona pellucida) and communicates with the uterus. It generally begins attaching to the uterine lining on day 2 or 3 post-transfer, with deep implantation following.#ivf #fertility #ttc #embryotransfer #foryoupage @Incinta Fertility