embie transfer

hi everyone need some help! today was my transfer day for my second IVF cycle. the first resulted in a MC. the lab doesn't grade embryos so I'm stuck searching the internet. the embryologist said that the only thing that wasn't the best quality was the TF. So I'm thinking mine was a 4AC or 4BC. my first transfer looked so much different (better?) so I am slightly freaking out. since we are all pretty much doctors at this point, can you guys let me know what you think? much appreciated!!