Welcome Elle is this your first baby? How have you been feeling so far?
Need really sorry you are struggling, but I'm glad you can see your counsellor soon, it's so important to have that support.
Ps-the mores basket is gorgeous!
car seats personally I would start off by looking at which is the safest one (Which website), when I had DS it was one of the Maxi Cosi seats, the maxi cosi website will allow you to put in your car details and tell you if it is compatible or not. Although lots of prams are "travel systems" they don't actually all come with the car seat in the package, it just means that some car seats will clip on, but lots of them do also come with car seats too, often maxi cosi/britax. So for me, I would start off with safest car seat and work from there with what that means in terms of which travel system. I suspect the QashQai has a large boot so you shouldn't be too restricted in that respect!
Thanks so much for all of the support on Friday, I am feeling much better after lots of sleep and having talked to DH about how I am feeling. I will talk to midwife and/or GP though as I know these feelings can come in waves so it would be good to have some support for when/if it gets bad again.