I'm sure you'll be fine - there's an 11 year gap between my brother and I (I'm the younger one) and we couldn't be closer - it was great when I was little and he used to take me out in his car, and I used to bother him and his mates when they came round! I'm sure you'll cope too - it'll keep you young! (or that's what I tell my hubby who's older and doesn't want to be having many more into his 40s!!)
I hear you with the wave of sickness - I seem to feel queasy around 2pm but it passes.... then turns into slepiness - maybe I'm just being lazy with the christmas build up and not really wanting to work...!
Yes, I work full-time, mainly from home though. Are you showing yet? I feel like I'm going to find it hard to hide this one for any period of time! x