Addition: IF it was daytime and starred wolves were appearing you can be sure that something's wrong there. If it was nighttime: That's a no-no, you need to do better with planning your portals/exploration. Also it seems like your portal was already set up, so you might have used it to regain your health & stam, right? If you use it, the area you just left will freeze if no other player is there so it should've been fine to take a quick break.
I agree with others: However that came to happen: If it's too much for you, use the console to get there again and retrieve your stuff but try to figure out what's the cause of that. I doubt that you had mobs following you from BF through plains up to the mountains just to meet you again after those 2 golems.