I can't tell the difference...

FTM here! I have been in the hospital for monitoring three times because of "uterine irritability" (basically BH but under 30 seconds). while being monitored, I noticed that most of my contractions felt the same as when my baby moves (he moves very violently to the point of making me ill). I can't tell if he was moving from the contractions or if he was causing the monitor to think they were...i am not sure. the last 30 min I have had bad back pain, he is moving like crazy, and I am having lightning crotch...i don't know if I should time this or if it's just usual third trimester pains?