Labor or Braxton Hicks

Contractions every 6 to 8 minutes for the past 3 hours. They vary between feeling like I need to have diarrhea/period cramps to sharp back pains to just a general tightening feeling in my belly. This happened a couple weeks ago and I was informed they were only Braxton Hicks. They're stronger this time, but staying in that 6 to 8 minute window between each one. I had my bloody show last night, so I'm assuming these very well could be real this time. I'm at work and I'm just debating on if I should head home and call OB, or tough it out here in case it's another round of Braxton Hicks. 😩

*UPDATE*

I called my OB, she wanted me to go into L&D to be checked and monitored. I've progressed from between 1 and 2 cm yesterday at my 1pm appointment to now between 3 and 4 cm. They sent me home until my contractions are about 3 minutes apart or my water breaks, but she did say this is early labor, not Braxton Hicks. So I'm hanging out at home. Watching the snow fall and timing these bad boys in hopes that we reach 3 minutes apart soon!