Am I pregnant?

delaney
I am on the pill. I used to take it at night, but this month switched to the morning. My boyfriend and I had sex during my fertile window, and I forgot to take the pill the next morning and ended up taking I at night. So like 36 hours.
Then, a week later, I am spotting. I have missed pills before, but have NEVER spotted.
I'm really scared. I'm spotting 4 days after ovulating, so I don't think it's the right time for implantation bleeding. Please help