Is something happening?

Katherine • Mother to Felicity Anne (3-28-15) 💞
I got checked yesterday (37w4d) and was barely 1cm dilated.
Today I have had a lot of pain and pressure though, and feel like I need to poo but can't. I'm also extremely hot and a little bit shakey.
I wonder if something is happening? I've had maybe 2 or 3 contractions all day (that I could feel).
I'm also very emotionally sensitive, my brain blows every little thing out of proportion. 
What do you ladies think??