Unsure?

I can't tell if I'm having pregnancy symptoms or PMS symptoms? Usually I don't get PMS symptoms till about 2 days before my period starts & even then they are subtle. I still have about 8 days till it should be here, but My boobs are pretty tender, and I've Been having lots of heat flashes. Also noticed my dreams have been super vivid and I wake up in the middle of the night needing to use the restroom? Which is weird for me cause I can usually sleep way into the day and be fine. My lower back has been hurting and my stomach cramps. I've also been constipated and having a runny nose & im so emotional that I find myself crying over anything. I don't want to think I am pregnant cause I don't want to get my hopes up, but anybody have these symptoms and found out you were pregnant? I've been pregnant once before but I can't quite recall the symtoms.