Yes, the soreness is normal, but...I'd be inclined to give it at least 3-4 weeks of healing before getting back on the bike...My '75 Honda weighs about 400 lbs, and if there was some kind of mishap, I never would have been able to get that baby upright again just after chest surgery. Gotta have full abilities AND faculties when you get on the bike, man! Be Safe. Sucks waiting, I know...but the time will pass. Congrats on the surgery!