Hi,
I agree with the other replies that you are dreaming, what is missing right now is the dream recall. I know that this can be disturbing. You may be wondering if you'll ever remember your dreams again, especially if this is the first time you've experience a lack of ability to recall your dreams or if this is the first time you've experienced such an extended period of lack of dream recall.
It sounds as if you use your dreams quite a bit...you sound much like myself. I have exceptional dream recall and actually almost rely on my dreams. The first thing I do each morning is write down my dreams.
And sometimes this is the problem! Working with dreams is a form of therapy and can be quite involving. Dream work involves many different levels. You are working on yourself psychologically, spiritually, and emotionally. Sometimes this becomes a little much, especially when you work with your dreams quite frequently.
The lack of dream recall can sometimes indicate that the psyche has given you enough information to work with for a while. It can be a sign that what has already been delivered needs to be assimilated and processed. Think of it much like being a famous person with a backlog of fan mail--only your mail is coming from you to you!
That you mention you have been tired lately also leads me to believe that you are probably in need of some resting/assimilation/recovery time--working on our interior selves has an impact on our physical selves.
I remember the first time I had an extended period of lack of dream recall my major concern was, "Will it ever come back?" Being such a prolific dreamer and then suddenly getting nothing was very disturbing to me. But trust me, your ability to recall the dreams will return. Think of this time as a vacation from yourself!
Lux,
Aisling