Sex on inactive pill

I wasnt consistent with taking my pills but I took them every day. I had sex with my boyfriend on my last active pill on a Friday night and then we had sex on Saturday morning on my first inactive pill which I didnt take. I normally dont beed until my 3rd day. I started bleeding on my 4th,and it was pretty heavy,today is the 5th day of inactive pill and it's super now I'm really worried it's not even a period and I'm paranoid that I could be pregnant,help! I take the combo hormone pill so I was told I dont need to take the same time every day.