Glacier in 2nd trimester

I’m going to Glacier in a couple of weeks and wasn’t pregnant when I booked the trip, but I’m now in my 2nd trimester. I’m definitely not in the shape I planned on being in for hiking. What are some trails that are less difficult but still very rewarding? I’ll also gladly accept any other bits of advice from people who have gone pregnant (or just out of shape lol)!