Condoms and Birth Control probable pregnancy

So my fiancé and I use condoms and birth Control (patch) as our means of protection but my period is a few days late. He always checks before and after but he didn't check it one time and when I had used the restroom I had something similar to semen when I went. We do want kids but it's still freaking me out since I do come from a traditional Mexican family where church wedding first babies second. Am I analizan this to much or can this actually happen? Thank you ladies!!