PMS or pregnant?

Nikki🙏🏼🤰🏻💕

So since we started ttc 6 months ago I’ve noticed about a week before my period I get symptoms that are very similar to pregnancy symptoms. I’m 6 days away from my expected period and I have sore breasts, lower back pain, cramps and nausea. I also feel like I’m peeing more often but might just be wishful thinking. How can you tell the difference?