Struggling with the Possibility of an MS Diagnosis

[More of a vent] A couple months ago I started exhibiting a few symptoms of MS. "Nerve attacks" when walking into heat, accompanied by blurred vision and lethargy that can last hours after the nerve pain. I'm aware of the symptoms because a couple in my family have it, as well as one of my close friends. When our doctor friend heard my symptoms, she told me to get checked immediately. I did and my doctor is also worried, she ordered quite an amount of blood work (5 and a half vials) and scheduled an appointment the closest she could. I've completed my blood work and now I'm waiting til the beginning of next month for my follow up appointment. If the blood test results come back off, she's going to send a referral to a neurologist and MRI. On good days, I struggle with the idea of it being in my head or the doctor thinking I may be faking my symptoms. On bad days, I struggle with the waiting game even more. What if everything does come back okay, if there's no physical proof of anything, then I can't receive help. Or if I do receive this diagnosis and my health keeps declining like it currently is, where does that put me, my job, and my family? The longer I wait and the more frequent my symptoms, the more I worry about the what-ifs and physical discomfort. How was getting your diagnosis? Did you also struggle with scenarios or the possibility of being mis/not diagnosed? How did you ease the anxiety?