39 weeks cramps

Dee
I think I could cry! (Not from pain)
I had a long night Monday with period cramps and mild contractions (I think). It kept me up nearly all night, I emptied my bowels 4 times and the pressure was quiet a lot. Well when I eventually slept for 2 hours it all disappeared. 
Then yesterday I spent all day with period cramps and random sharp pains, to go to bed and have a long night again. Cramps and strong but mild contractions. My stomach was hard a lot of the night and I didn't sleep. I got 2 hours sleep from 4-6 and now they have gone!
This is not my first baby it's my third so according to my midwife you don't get false labour or practises! So what's going on! I'm so tired and it's upsetting not knowing what's going on.  Today my stomach feels bruised from all my tightenings last night! 
Help any advice much appreciated x