What is causing this?

So I finished my birth control pill 2 months ago and I have unprotected sex, but I use the pull out method. I’ve had Cramping all month, and the urge to pee a lot, but I never thought anything of it. I had sore nipples for a day and then that went away. I had shorting pains up my vagina, kinda like shocks randomly one day when I was laying down, and a pain in my uterus when I stood up randomly. My period is now currently 5 days late and the pictures circled is what it coming out of me. I’m not sure if it’s because of my birth control and my cycles aren’t normal yet, or if pre cum could’ve gotten me pregnant, What could this be?

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