jas the baby dropped yet?

this is my first pregnancy and i am 32w pregnant. i chased after my dogs one night and had to pull them all the way back home hunched over holding them at their collars while they were pulling me. i was in a lot of pain mostly back pain. the next day i was having some very uncomfortable lower abdomen/pelvic pain. now its been my hips and pelvis. especially my pelvis. and it just feels heavy. and i have been getting stretch marks on my lady parts(not sure if that's relevant). and i was told i was carrying super low by my mother in law.. so i was wondering if it could just be because he dropped? but i read that i should be breathing better when that happens and im still having a terrible time breathing. any ideas. maybe i should have made this a poll those are more fun.