Will my upcoming period be my last period, or no pregnancy I’m fine

Here is a picture of my cycle for this month. I been taking prenatal pills because I’m twenty and was told I am in my child bearing stage. On the twelfth and twenty first we had sex without a condom which resulted in here ejaculating inside of me on the eighteen we used a condom. I can feel my period coming my boobs are sore and I cramp everyday. I’ve just been wondering can this be my last period? Usually I don’t worry about these things we have slip up all the time and I’m never pregnant but this is my first time taking prenatal pills. So after my period should I still test or no it’s fine i don’t need to because I’m already getting a period?

Ps, I have a lot of pelvic pain, I’m cramping, I have headache frequently, I’m often nauseous, and my breast are extremely sore followed by fatigue. I’m also have lot of discharge sorry which is very creamy but medium. I often have these symptoms when getting my period minus the pelvic pain and headache, also fatigue

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