You are not overescting, and the Thrush still looks bad, but glad you are getting medical attention, and treatment. I took 100mg at first, then another doctor upped it to 200mg of flucomizoe. Some develop a resistance, and the meds are then changed or dosage increased. Thrush can go to the esophagus, stomach, and if it goes into the blood system is desseminated or invasive candiasis, and difficult to treat, is dangerous, so it needs to be treated properly. Maybe that's causing the swallowing problems, but that needs to be looked into further. An infection usually shows by increased white blood cells, but maybe not always since there is an infection with the thrush. Do you smoke? That can cause elevated hemaglobin. The HSV is not normally checked with a complete blood Count. They can do a swab or test the blood for HSV antibodies. Sometimes it's hard to tell between that and thrush, but sometimes there can be co-infections. I hope you get to the bottom of everything, and rule out any major illness. If Thrush is persistent you can go to an infectious disease doctor, which may sound worse than it is, but are doctors more familiar with these chronic infections. A hematologist deals with blood disorders, if that is necessary too.
Thrush feeds on sugar, yeast, alcohol, and processed foods, so you may want to reduce or illuminate foods containinng them. Also, you should change your toothbrush often to keep from reinfecting yourself. Some disagree with use of probiotics since you are only introducing more bacteria to the body. If they are, the refrigerated type are recommended, and check the expiration date.
Good luck with everything, and hope this helps.