Well, I didn't exercise that much because of my sciatica during last pregnancy besides cleaning and some light walks around the neighborhood and I had a 4 hour labor with 35 minutes of pushing and it was my First baby
I'm pregnant again and the mw said that 2nd labors are usually much quicker and sometimes cut in half
That being said, I had a home birth and stood the entire time either in the shower or leaning against a wall just because it was unbearable to be sitting or laying down. I think this might have been caused by back labor but not really sure. I just had to agree with Deltawifey that sometimes epidurals and laying flat on your back can cause labor to slow waaay down.
To the OP, I lost 5 lbs during the 1st tri due to food aversions and it looks like the same thing is happening with this pregnancy. I didn't start gaining until 20 weeks. I did end up gaining 35 lbs but I think I emotional ate a lot during those last few months. I don't mind gaining the weight as long as I know it's from healthy sources and not ice cream! So as long as you are eating healthy for your baby (when you feel like eating of course) you are doing great and you don't need to worry about Dh's grandma. I'm sorry you have to deal with all the comments. It would bother me too.