A very watery dream

I was in a really big green pasture that was probably in a valley (near mountains) with some girls (or young women) and little groups of us were leaving the green space and running across a two lane highway to come together in some way, like maybe to get on a bus. There were about three of us left in the field and we saw an enormous big rig truck approaching. It was on the other side of the highway but it could still spray us with mud; in fact, it was going to be difficult to get out of the way of the spray. There also was a guy behind us who was like a father or a coach and he was telling us to move away or get back but we had already seen the truck and started doing that. He was also explaining to someone that traveling has been really difficult lately. The very green field or pasture (maybe there was also a horse or two in it) just seemed to be getting swampier as we were moving away from the highway and there was a very gentle sound of water, perhaps like how it sounds when little waves splash the sides of a bathtub, or else like the watery sounds I heard in a stop menstrual cramps video recently. The sounds of the water were the gentlest yet most terrifying sounds taking over at the end, making you want to wake up and get out of the dream.