I feel bigger at night..

Kennedy💖
Thank God for snapchat filters. 
Am I the only one to wake up in the morning just to find that my baby bump has disappeared? By 5pm it looks like this. I'm 18 weeks and 4 days.. I still don't know the sex of my baby. My friend (who is also pregnant) is 2 weeks ahead of me. She recently found out that she is expecting a girl, so she feels as if I'm having a boy because my bump is "huge" compared to her's. (Her words not mine)