Looots of discharge. Help.

So, never thought I would do this here...

I had sex with a guy a few days ago. Fertile period. We would “warm up” without a condom and then continue and end with it. Sure that none of them broke. Did it like two times on that day. However, currently I am experiencing a looot of white discharge - kind of creamy, soft, without an odor. How strongly should I be worried about getting pregnant?

Gosh I feel stupid.

My next period should be in 12 days (cycle of 31)