I disagree!! For someone who has suffered from horrendous morning sickness well HG if there were spare spaces (tesco's usually have loads) sod it I would do the same bloody thing!
You weren't abusing it, you're not well and carrying a child! Also, it sounds like Tesco were understanding and even confirmed that there wasn't a policy against it!!
For people saying you could have parked a few meters away, if you feel that awful a few metres makes a huge difference! Also, if you're like me and don't have family or friends nearby to help out you still have to shop and buy good etc. Online shopping doesn't suit everyone, some have minimum spends etc or don't deliver to near you.
Also, people saying you shouldn't drive, sometime you have no choice and obviously if you felt too horrendous you wouldn't do it... But again with people's situations you have to continue with life even if you feel sick. I have to drive nearly two hours to my mothers house with HG so she can look after my little one when I'm really bad as she doesn't drive and isn't well her self. I have a bucket next to me and I have to constantly pull over to be sick. I get on with it because I have to.
For the lady that had a go at you, she can f&ck off and do one! People like that have nothing better to do in their sad lives.
Do not feel bad, you didn't do anything wrong unlike millions of other people who take advantage. Also, Tesco even confirmed that it was ok.
Sod everyone else and you have a good weekend.
Hope you feel better soon 