Dreams are actually the interpretation and deduction of external stimuli (touch, sound, etc.). When some functions of the brain are turned off during sleep. Compared with daytime, dreams are often discontinuous and unreasonable, because only a small amount of memory and understanding functions are retained at this time. People can't perceive external stimuli during sleep, and they will have different degrees of tension, so the mood accompanying dreams is even more tense and even nightmares.
The problems that you are concerned about recently, with the opening of your mind, will be easier to enter your dreams. This is the so-called thinking day and night. Maybe you have some stress in your life or work. Or your feet catch cold and so on. This can only be explained by knowing the specific situation.
If you believe in superstitious dream interpretation, I have nothing to say.