The day has arrived! You think you are in labor!
First how do you tell if it is really labor?
So you notice you are having contractions and they seem to come and go. You can try timing them. To time a contraction you time the beginning of one contraction to the beginning of the next contraction. This is how far apart they are. Note the duration of the sensation as well. What you should start to see is a pattern. There are many apps for timing this or you can use an old fashioned watch or clock.

Longer, stronger, closer together is the key to a labor pattern.
Your contractions should fall into a rhythm of sorts. Maybe they begin at 8 minutes apart lasting about 30 seconds. Then you feel a shift of intensity and you time them again. Now you notice they are 6 mins apart lasting 40 seconds. This appears to be a labor pattern. The sensations are getting longer, feeling stronger, and are closer together than they were before.
When is it time to head to the hospital?
The 5-1-1 or 4-1-1.
When your contractions are 5 minutes or 4 minutes apart, lasting one minute long, for the course of an hour, it is time to head to the hospital. Ideally you will get to the hospital in an active labor pattern.
Notify your provider that your are heading in or you can always ask them if they feel its a good time to come to the hospital as well. Of course talk to your doula as soon as you think anything is going on. She can offer suggestions, listen, and remind you of ways to cope!

There are some variables that can change when to head in. If you are high risk, GBS positive, or your water is broken, are some instances that can change the timing. It is a good idea to discuss with your doctor or midwife what it looks like when you think you are in labor. Let them tell you what they prefer in your specific instance.
So remember, longer, stronger, closer together and the 4-1-1 will help you decide when it is time to go! Safe travels ahead!