Pooed on my SO

I've only started having sex with my SO recently and it's been really great but we thought we would spice things up a bit so we tried 69. However it took a turn for the worst when I really needed to fart and it followed through. The worst thing was that it was in his house in his mums bed who was away for the weekend!! I ran out of the house and he hasn't spoken to me for 3 days...help what do I do I'm so embarrassed😭😖 p.s there was poo on the pillows