I have completed radiotherapy treatment 2 weeks ago for mucosal melanoma of the nasal cavity.I had surgery before this - the tumour was 3.5mm x 1mm thick but there may have been some melanoma in situ. The radiotherapy was awful and have had lots of side effects including nausea, extreme tiredness, watery and blurry eyes. I am having a problem with nasal congestion - it comes and goes but is really terrible at night. I am doing nasal rinses several times a day, steam inhalations. Is there anything else I can’t do and will it improve?