Thanks a lot for your input. I am sorry to hear about your problem. I am going to address your primary concern but later you can ask anything you want. These symptoms indicate that you are likely to have three problems. One is blocked nose and sinusitis that can lead to headaches, throat pain, ear blockage, and even hoarse voice. The back of neck pain is either due to muscle spasm or cervical spine problems. The last cause which can have some input can be acid reflux. Don't worry, I will address your question in two aspects; what you can do yourself and what your doctor can do for you. As far as what you can do yourself is concerned in such situations the following measures can help you; Over the counter available;
1. Two tablets of paracetamol thrice daily for 5 days
2. Tablet Claritin once daily for 7 days
3. Sinex nasal spray 2 puffs thrice daily for 5 days
4. Capsule Omeprazole 10 mg twice daily for 2 weeks
5. Steam inhalation with menthol drops twice daily.
Later see your ENT and he should order a CT scan and X rays of the neck and proceed accordingly. I reassure you that this is not cancer because in that case, the pattern of symptoms is different. If you will google your symptoms, it will say cancer but this is not how medical science works so just relax and I don't stress yourself. I reassure you. Your doctor should prescribe you steroid nasal spray as well. Lastly, I would like to share a home remedy. Take 250 ml of honey, add one tablespoon each of ginger extract, and black pepper. Make a solution and take one teaspoon twice daily. It might take 7 days or more but will help you. I wish you good luck and that you get well soon. My goal is to provide you with excellent service – if you feel you have received anything less, please reply back as I am happy to address follow-up questions. Kindly rate me when you are done. You can come back here to ask anything even after you have rated the answer. I will be glad to help you always. A 5-star rating is requested and will be appreciated. Regards