My body confuses me

I feel like I don't even know what's going on inside my own body anymore...
This is my 3rd pregnancy, and it's so much different than my other two. I'm so confused...

I've been getting these cramps, literally, every single night. They feel like really bad period cramps, but I can feel my belly get harder all over. It's like they're contractions, but not. At first I thought maybe it was labor, but after a while, I go lay down and the next thing I know, I'm waking up in the morning and they're gone - so obviously, it's not labor.
I thought maybe I was having constipation pains, but I'm actually going to the bathroom pretty regularly, and it's not "hard" to go.
I never even had any issues close to this with my other 2... it's so weird.
So I'm guessing it's braxton hicks... but I thought they were high up in your belly?!And why is it that, everynight around 9 pm, they start until I go to bed. It's like clockwork... And the baby never seems to move much during the whole process... he wiggles all day and all night, but seems to sleep through my "uncomfortable" stage...

i got the same thing! & its painful! but they stopped havent had them for a couple of days. im guessing braxton hicks-well at least that's what everyone tells me 

They're no fun! I never got them with the other 2... ugh, my body hates me this time around!!

P.s.. your avi is SO CUTE... I think I already told you that, but I thought I'd tell you again