Thats a massive drop hjh, you sure there werent any factors that could have affected the drop i.e maybe you took temp too early or slightly different from yesterday? I had a drop this morning also but it was only 0.08 celcius. maybe its the hour difference that FF hasnt taken into consideration, what do you think? As for implantation its a little too early. It should happen around 6 - 12dpo I think, but I could be wrong. When I put yesterday temp in my ov date change from cd9 to cd13. Am so worried we may have missed the egg, oh well am going to keep up the pma and send loads your way also hjh. Dont give up just yet we may still be in the running. I dont have any symptoms just yet, just stuffing my face but then again whats new lol.