FTM... Am I crazy?

Ch
I'm 39+2 today and I've got a few questions that are driving me crazy...
I've been having low back pain on and off that doesn't seem to be affected by what I'm doing (sitting/standing)... Occasionally my stomach will tighten at the same time as the back pain and sometimes it tightens between the back pain episodes... Contractions? They don't feel like my Braxton Hicks, but still no pattern and haven't gotten any worse over time....
Is it possible to leak amniotic fluid but not fast enough for it to soak through and run down your leg? I really think there should be a home test for amniotic fluid lol...
Did anyone else notice their baby was wayyyy more active the day they went into labor? Or was it maybe the opposite?
Sorry for the long post.. I know I should just relax and wait and see if the pain gets more into a pattern and more intense but it's just killing me the not knowing when this baby will decide to get here