Those are very common/normal fears.
Some you can't help. (like the tired part) But you deal with it like anything else.
You do have to put some things on pause for awhile. But plenty of other Moms with older kids say that you do get some of those freedoms back. And sometimes you don't quite reconcile some things. There is always a pull somewhere or something that feels as if it is being neglected.

Taking a baby to England is crazy but it can be done. Shoot I know a lady who took hers to Nepal. But there is a certain level of insanity that one has to have to have a baby. hah