Pregnancy symptoms same as PMS?

Hey everyone, So ive been trying to conceive with my bf and we had sex at least 3 times during my fertile window and the day before my ovulation. I did research and found that implantation doesn’t happen until 6-12 days later and I have been cramping about a week before my period is due which is monday but the cramps are different. They come and go but they’re mild. I havent had any spotting and I have been having symptoms of sore breast, nausea, and im extremely tired more than usual. But I also know this could be symptoms of pms. So for any of the mommys out there were your symptoms the same as pms? I heard its easy to get them confused.