A sore throat, with swollen lymph nodes, is as likely to be a Strep throat as it is to be a viral infection. Whatever the infecting agent, it is likely to be causing your nasal redness and symptoms; this is very unlikely to be related to the nasal spray. On the other hand, given your daughter’s problem you too could have a staph infection and/or be a staph carrier. You should be checked for this.
Give this another couple of days to improve and if it doesn’t you should be reexamined and your nose and throat cultured for strep and staph.
Anyways I am taking multi vitamins and drinking OJ every morning so hopefully I can get my immune system up!!!