What you are feeling is uncomfortable and confusing. However, I am glad that you are able to write coherently because I am understanding you. First, if you have concerns about a possible mold exposure then you need to have a chest x-ray done and blood tests done as well. This can be done by your primary physician. Concerning the foggy feeling that you are having, this can occur if you are under alot of stress, which you probably are, because you are worried. You need to rest and relax in order to reduce your stress level. I cannot diagnose you over the internet, without exam and knowing your medical history. Your medical doctor is most familiar with you and can treat you based on his information about you. You will probably benefit from taking a mild anti-stress (anxiety) medication at this time, so that you can relax and think more clearly. You can inquire about your mold exposure and ease your mind by visiting your doctor. It definitely needs to be ruled as causing your problem, because after effects of mold exposure can be serious.
This info that you give is very different from your initial question which I already answered. I will give you some insight here. Are you currently being treated for panic/anxiety? Panic and anxiety can have very strange effects on the body, especially if not treated. Erectile dysfunction and lack of semen must be checked out by the urologist. Vision problems must be checked by the optometrist or ophthamologist. You should have a physical exam and blood pressure checked. Weakness and tiredness and memory problems can be indicative of your anxiety and you will probably benefit from taking a mild anti-anxiety medication. Being that you have been to a doctor and blood work and all else came back negative is very encouraging.
I hope all will be well with you!
Sometimes when a person is very anxious and nervous, they describe their mind to be racing and there is an inability to focus or concentrate. It is curious that you are uncomfortable because your mind is NOT racing. But, you know yourself best and what your comfort zone is. You write very well, making total sense, and your words are expressed well, which makes me think that your thought process is good. You need to feel comfortable with yourself. Would you consider going to individual or group therapy to talk about what you are feeling. I think it would be of great benefit to you to do this. You must speak to your doctor about taking medication since you will need a prescription for it. An antidepressant will be prescribed if the doc finds that you are clinically depressed. I am not feeling that you are from your communication here. A low dose anti-anxiety drug may be prescribed to relax you and allow you to think more clearly.
You expressed concern about MS in your previous response and I don't know why you seem to have great concerned about it. Is there any family history of this illness? You don't describe typical symptoms of MS and you said that the doctor ruled it out. No need to be worried about it at this time. Are you going to Florida for rest and relaxation?