When I was pregnant I stopped journaling. Had no desire to crochet. Basically lost all drive to do any of the things that interested me before. (I've NEVER had the desire to to housework, so that didn't affect me at all

). I think, to some degree, pregnancy is designed to allow you to lose focus on everything but growing a healthy baby and I wouldn't stress about that.
As far as the jogging, nope, you shouldn't do it while you're pregnant if it's high intensity or stressful to your body BUT walking wouldn't cause that same stress on your joints/impact to the baby. Substitute walking for jogging so you can stick to your routine and stay focused on your exercise. You could also use an elliptical if walking is boring for you.
I started my pregnancy so heavy that you couldn't tell I was pregnant until I was 26-27 weeks. I wore the same clothes throughout my pregnancy until about two weeks before I delivered.