It's so hard to predict but my hunch says that is the best time in a pregnancy to travel. It was for me with DS. I had tons of energy and wasn't big yet - just normal but with a cute little belly starting. My m/s had finally subsided and I felt like a had a whole new lease on life. I hope you go through the same thing (well, minus the m/s).
Come up to Montreal! It's awesome here and that's a beautiful time of year to visit.
Happy mumma to my boys Henny Tom (Nov 30, 2008), Arlo Odie (Oct 5, 2010), and baby SISTER! due mid-Dec 2014.