A Day 3 embryo (cleavage stage embryo) typically implants 3–5 days after transfer . Implantation Timeline for a Day 3 Embryo Transfer Days Post Transfer (DPT) What Happens? Day 1 (24 hrs) Embryo continues dividing and developing into a morula stage. Day 2 (48 hrs) Morula reaches the blastocyst stage . Day 3 (72 hrs) Blastocyst starts hatching and preparing to implant . Day 4–5 Blastocyst attaches to the uterine lining (implantation begins) . Day 6–7 Implantation completes , and the embryo starts releasing hCG (pregnancy hormone) . When Can Implantation Symptoms Occur? 🔹 Mild cramping (due to embryo attachment). 🔹 Light spotting (implantation bleeding) (pink or brown discharge). 🔹 Increase in basal body temperature . When Can You Take a Pregnancy Test? 📅 Blood (Beta hCG) test: ~ 9–12 days after transfer . 📅 Home Pregnancy Test (HPT): ~ 12–14 days after transfer (but may not be accurate early on). Disclaimer The information provided in this blog is for education...