Feelings between boys and girls

Donna • I'm 28- been with my partner a long time, we tried for 3 months and I'm now 16 weeks, due May 22nd 2016! Excited much!
Hi- explain ur different pregnancys between boys and girls 
With my 1st I felt massive all the way, carried all around me and had a boy. I was also only sick for the first 2 months. 
This time I'm 18 weeks and feel flat still (well not FLAT) but don't feel pregnant lol and I'm still throwing up 😫😫😫😫