Plan B HELP 😕

so I took a plan b about a month ago July 29th and a few days later I was spotting and after like 3 days it went away. I was supposed to get my period on the 15 this month ( August ) and I still haven’t gotten anything. Iknow it’s normal for your cycle to get messed up after taking a plan b but I’m starting to get worried because the month is almost over and for some weird reason I don’t know if this has anything to do with it but I also randomly got a yeast infection and I’ve never gotten one in my life, I did research and it said a cause is pregnancy. Is this normal? Or could it be a sign of pregnancy. 🙃 someone help calm me down, thank you. 😭