My two children were completely different pregnancies.

With DD I hardly slept, maybe 4 hours a night, and was very energetic, I had mild ms which I cured with salt. DS I was sleeping 10-12 hours, woke up exhausted, as the tiredness faded, the ms kicked in, and couldn't be cured by anything.

That being said, my MiL swore her 3rd was a girl as her pregnancy was so different to the first 2, but she ended up with 3 boys.

My cousins two pregnancies have been very similar, and she's had a girl and is having a boy.

My children did get bigger, but I know people who that hasn't been the case for, and the weight difference between my sister and I was 1/4 ounce. Though my 2nd had a smaller head, and that counts for a lot!

My DD (1st) was induced at 41+2, I was throwing up everywhere, I had to be given an anti-nauseant which hit me so hard I wound up having to have an epidural. I remember feeling tender for weeks afterwards.

DS I went into spontaneous labour at 37+4, I took 2 panadol and that was it, I felt great afterwards - 2-3 hours after the fact I felt completely normal, like I hadn't even given birth! So I'd say while labour 1 was not a pleasant experience, I loved my second labour (as much as you can "love" a labour!)

My labours did get shorter, but I know it's not necessarily the case. The only thing I do know for certain is that every pregnancy & every labour is likely to be different - there are no hard and fast rules!