Help!

Layla

I'm so confused right now. I was supposed to get my period 5 days ago, I pmsed properly (the way I do before my period) but then the day it was supposed to come came and nothing. This entire 5 day time I've felt weak and tire quickly. I did have sexual two weeks ago unprotected, my

partner did not finish inside me and none of his sperm was anywhere around, on or in my vagina. Why do I feel so strange? My mood has also been up and down. Btw my period has been late before. Please

comment any possible solutions I would really appreciate it!