Me and my girlfriend dry hump on her ovulation day. She is on her inner and night pant and I am on my inner and shorts. She was in bed and I am on her we are grinding each other. My genital area and her genital area is rubbing on each other and unfortunately I ejaculated inside my inner. Is it possible for clothes to get wet layer by layer and sperm travel  through 4 layers and get her pregnant ? We are on clothes there are 4 layers of cloth. Full time we were on cloth. We didn't take off our clothes.