Could I be pregnant or plan b side effects?

I took the plan b in September and October because I didn’t was not on my patch in sept. And didn’t wait a full 7 days in October. I had a normal period after both times and I’m using my birth control patch correctly. I had in November sex with my boyfriend on Sunday. We didn’t use a condom because I’m on the patch (used correctly 100%) I had brown blood and some discharge for four days. My period wasn’t due for eleven days right after I had sex. I will admit I was scared and took my patch off to get my period to start early. The brown blood/discharge stoped on Thursday and then turned to red and I had lots of blood clots by Sunday (heavy). It was only four days long. My stomach has been bloated a lot lately even before my boyfriend and I had sex that weekend. Could the plan b cause break though bleeding because of the large amount of hormones in my body from being on both birth control and taking it. Hormone imbalance cause bloating and breakthrough bleeding?

Anyway is there a possibility I could be pregnant?