pregnant but don't feel it...

2nd pregnancy - 3rd baby. 1st pregnancy was twin boys 💙💙
I'm feeling really negative about this pregnancy. I'm 5 weeks and don't even feel pregnant. I know it's still really early but I'm sure I was feeling more pregnant in my last pregnancy - maybe because it was twins.
First scan on Feb 4th and literally counting down. 
4weeks + 6days today - anyone else around this time and feeling the same? 
Almost like I don't believe I'm pregnant even though I've taken a silly amount of tests and all say I am!