Hmm… It sounds to me like you are having a normal dream about yourself in a lucid dream. When I first started I had tons of those ad they’re so cruel because at first you really think that you were lucid and sometimes, if you don’t remember it well, you might not even be able to tell if it was fake or real.
In your dreams, you said you felt very tired. Like I said, that sounds a lot like a normal dream about lucid dreaming.
As for help, I suggest you start here as this faq will help you find the technique that sounds best for you. Also, try to make it a habit to perform reality checks frequently throughout the day.
And, if you’re sure you were really lucid in those dreams you mentioned before then go here and see if that helps you at all with your original question.
Best of luck to you, and Welcome to the forum! 
Be sure to introduce yourself in the The Big “Hi I’m New Here” topic!