positive fetal fibronectin test at 29 weeks

I was having what felt like menstrual cramps today that lasted for a couple of hours so I went into the ER. The cramps weren't extremely painful but very noticeable, especially while walking. Thankfully, they weren't contractions but my fetal fibronectin test came back positive. I had 2 maybe 3 actual contractions while at the hospital but they were spread over a 2 hour span. I was cleared to go home after 4 hours of close monitoring, several tests and an ultra sound. I wasn't put on bed rest or anything. But I'm wondering if any of you ladies tested positive and if you did, when did you have your baby?