I dont know what to do 😩

So about a month ago I had sex, we used a condom the first few rounds. The next morning we didnt use a condom but he just put it in and took it back out right away. I took plan b the next day I had just ended my period a few days before. I spotted for like 4 days after taking plan b. Now almost a month later I havent gotten my period, I am 10 days late. Is it because of the plan b or could I be pregnant? The worst part is the guy and i are not talking anymore and I'm scared. I want to message him just in case but I havent tested yet so I dont know if i should get ahold of him or not.