Sex after separation.

So I am separated from my husband we’re waiting on the divorce to keep certain benefits.

So the other day I had sex for the first time outside my marriage the last 4 years. I didn’t plan on it but I let my hormones get the bests of me and we used the pull out method and I was at the end of my fertility window and now I’m paranoid and freaking out. I had an emotional break down the day after cause it made me miss my ex. And I’m freaking out about getting pregnant. 😩😩😩😩