Think I may be having preterm labor again 😭 bad cramping started in my lower abdomen at work last…

Think I may be having preterm labor again 😭 bad cramping started in my lower abdomen at work last night to the point I wanted to cry (I didn't do any lifting last night. It was slow so I pretty much walked around and talked to coworkers). I came home and took a warm shower to see if it'd help. Well, they instantly came back, so I laid on the couch for half an hour while my SO just held me. Now, I woke up with the cramping continuing and lower back pain (lower back pain is what I had when I went into preterm with my first son). They weren't concerned about watching for preterm this time because the reasoning I had it my first pregnancy was dehydration and being on my feet too much. I was in beauty school all day on my feet. Then pizza delivery. Now I only work, not even full time. And I've been drinking a lot of water.