is this labor?

Be
I woke up this morning over an hour ago with pain that turned out to be bad contractions about 5 minutes apart, 1 minute long consistently for over an hour now. I didn't noticed anything before this last hour+ because I was in a Tylenol and Benadryl fueled sleep (wide awake now, that's for sure). I did that because I've been having slightly painful Braxton hicks for a couple days and pain that makes it hard to sleep. These are so painful when I have them that I want to throw up, however, and I've been losing my mucus plug over the last week and having a lot of loose stools (sorry, TMI).