Is no morning sickness normal?

I’m not trying to brag here, I’m genuinely concerned. I’m 6w5d and I’ve yet to experience morning sickness. My mother is very surprised I haven’t so I googled it, and I read that women who don’t experience morning sickness are more likely to miscarry. Now I’m worried.

I’m having other symptoms such as sore breasts, heartburn, mild cramping (I’m assuming this is my uterus expanding), mood swings, the veins in my breasts becoming more noticeable. Even heightened sense of smell - walked into Cheesecake Factory the other day and had to leave because the smell of whatever I was smelling was making me gag.

Anyway, is it okay to not have morning sickness yet? I go in for my first ultrasound in about a week but I’m worried before then.