Maybe somebody on here can help me.

For those of you that have been pregnant, I know spotting in early pregnancy is normal, but how can you spot if your cervix is closed ? Wouldn’t it have to be open for that to happen ? I’ve been spotting off and on since yesterday. It only happens after I have to pee really bad and can’t immediately get to the restroom. Is the pressure from my bladder on my uterus causing me to spot ? Or should I be worried ? I’m not cramping or anything. Just spotting and it hasn’t gotten heavier.