What is it?

Very aching and crampy low 
And all over belly 
And in back... I also get these cramp pains every day 
Some are just uncomfortable but most are painful 
That kinda feels like gas 
It hurts to walk sometimes now... 
are these contractions ? 
FTM and I don't know... 
been having a lot of problems and so far has been told everything is normal 
So crazy 
I'm 36 weeks now