Everyone is different. Some women would enjoy watching thier body change others will hate it. Though I have found it harder to become acustomed to the changes a baby has had on my life after the birth. I find I never have much time to myself and by the end of the day I can't wait till DS is asleep, to have a couple of hours to myself.
Certainly after I had recovered from birth, the freedom of movement I had was enjoyable. I like to sleep on my stomach, not being short of breath anymore, being able to move again etc.. It was a weight being lifted. That just made way for the next set of challenges.
Only being 19 weeks, you still have a little way to go. Just keep in mind the end result, they physical changes will return to normal (though it could be a new normal).