I stayed over at a guy's place. We have dated for 7 weeks. I was on my period and it was heavier than expected. In the morning, I woke up and stood on the floor. Suddenly blood dropped on the floor. I didn't care so much because it's natural and not intentional. Also it was floor, so I wiped and there was no stain. I didn't apologize him. However, he said he was annoyed and we had an argument. I texted him sorry for bleeding on his floor since he seems like want me to apologize. I'm still not sure if I really needed to apologize. Am I wrong? Or strange?