Help??!??!!!?

Okay so, I’m on the combo hormonal birth control pill. I have taken it EVERY day for the past 2 months at 9pm sharp. I have an alarm set and have it with me 24/7 so I’ve never even been 5 minutes off! Well I just took a pregnancy test and I’m pregnant. I have no idea how this could have happened. Me and my fiance had sex nearly every day during my last “fertile window” but again, I never missed a pill by a minute. I was really sick during that time and took a bunch of OTC medicines but I can’t imagine they messed with it. I took Capmist DM (prescription), mucinex, and Walgreens Cough DM. I’m also on Zoloft and Omeprezole. I’m just a little confused how this happened, so if anyone had any insight, it would be appreciated!!

EDIT: The test was pink dye, FRER. He was finishing in me. 🤦‍♀️