Hi lovely's

I'm currently 6w 2d and have quite a few symptoms such as sore boobs back ache tiredness my sciatica has flared up already and i can't stand the smell of peanuts 😂 this will be my 4th baby and normally I've got morning sickness bad by now and I'm currently only nauseous when I'm hungry is this normal anybody else experienced this also do you think its a good sign or not as I've been worrying something is wrong with not being sick like I have with my other 3 babies? Thanks guys ❤