Good morning. I am very concerned about a situation that I find myself in at present. To describe the situation, my girlfriend and I were lying together on the bed when I became aroused and subsequently ejaculated on her thigh. She got up quickly, wiped herself off, went to the bathroom where she washed herself and urinated. The thing involved is that she has irregular periods and often misses them due to a high-stress lifestyle. What are the risks that an unintended pregnancy may occur in this way?

Thanks for your info.