According to the book, The Expectant Father by Armin Brott & Jennifer Ash:
the baby will change from an embryo to a fetus. By the end of the month, he/she will have stubby little arms (no fingers yet), eyes, (without eyelids) on the side of their face, ears and a tiny beating heart (on the outside of their body). If you bumped into a six-foot-tall version of your baby in a dark alley, you’d run the other way.
Another resource says the size of the fetus could be between the size of a kumquat or a nutter butter, take your pic. I chose the nutter butter for a visual up top. Puts it into perspective doesn’t it?