Birth Control Pills & Pregnancy

I always took my pills at 6:ooam ever since I started them in May. I had sex with a guy in June, Yes, he came inside me, twice. But the next day I got sick of being woken up at 6am because I was out of school. So I missed my 6am pill & I’ve been taken it at 12:30pm ever since. A week later I start spotting for 2-3 days Then it stopped. I spotted again two days ago. I ended up with a yeast infection 2 - 3 Days ago. Out of the blue ! I haven’t had one for a year. I read that pregnant women get yeast infections out of the blue.

My lower back has been hurting too & i’ve been having fatigue 🤷🏻‍♀️ do you guys think i could be pregnant?