Is this it?! 😁

Janet
I've been awake since 3 am with what felt like intense period cramps and lower back pain. Also felt like I had to poop. I started timing them and they were consistent for about 30 minutes, then not. Then consistent for another 30 minutes. 
I got out of bed about 30 minutes ago and had a bowl of cereal and then immediately had to poop.
 I just feel different and off- could this be labor?
Im so scared to go to L&D and have them send me home. Also worried about waiting too long ha!
I have my 39 week appointment this afternoon so hopefully I will get some answers then!