Halfway through the second trimester soon. The fetus is about 4.5 inches long. Ultrasound might show more details.
Week 17 - Fat Layers Develop
Pregnancy Basics
Week 26 - Eye Opening
Fertility Signs
Week 27 - End of Second Trimester
Week 25 - Brain Growth Spurt
Week 13 - Rapid Growth Phase
Week 37 - Full-Term Begins