Weird dreams

I've been having a lot of weird dreams lately. Most of which are re-runs and even recycled dreams; meaning, I've had them before. I know how it's gonna end, but I can't change the outcome. I've no idea what these dreams mean, so maybe someone out there can help me decipher them:

Dream #1
I'm at the PISA Aquatic Center main pool. It's in the evening and the pool is crowded with swimmers and kids. The sun is shining brightly outside. Feels like a weekend afternoon. I don't see my kids training, and I'm about to go for a dip in the pool. I dive off the starting block and plunge into the water. When I surface, it's dark ... it's night-time and the pool is deserted. The doors are locked and there aren't any lights on. The silence is eerie. I'm the only one in the now-deserted swimming pool.

Dream #2
Again, I'm at the PISA Aquatic Center main pool. A training session is underway. It's early morning so the pool isn't open to the public yet. It's just us in the pool. I'm preparing the swimmers for a sprint. There are kids on the starting blocks waiting for my signal while others are lined up behind. I walk forward (away from the kids) and blow my whistle for them to go. When I look back, everyone's gone. The pool is empty. It's still day-time, but the floor is dry and the water is undisturbed.

Dream #3
Now this one is a little scary. I've been asked to give swimming lessons. I arrive at the student's home. It's a large, luxurious house with many swimming pools of various sizes. There are people everywhere. Some cheerful, others chatting happily. My colleagues - coaches from other teams - are there as well. Some for swimming lessons while others for poolside parties. Everyone is in a pool of their own in this house. I'm asked to conduct my swimming lessons in a pool which is empty. This pool is empty except for a silver-coloured fish swimming at the bottom of the pool. I dive into the pool and without knowing, I touch this fish. When I surface, the world is totally different. It looks like there had been a war. The once-luxurious house is now in ruins with wreckage everywhere. The sky is an eerie red and orange. I'm now standing on the bottom of the now-empty pool. There's no sign of the silver-coloured fish. I find myself desperate to escape.

I've had Dream #1 and Dream #3 before when I was going through very rough times. It surprises and scares me that I'm having the same dreams again now. Premonition? Imagination working over-time?