Thank you for the information.
You have done well with nasal hygiene which I encourage as often as necessary during the day and at least 30 minutes before bed.
I would also recommend checking the ingredients in Benylin as it may have a decongestant in it, as does Otrivin, and should not be combined.
For headaches, Tylenol is still the best option, but again, make sure it is not in Benylin.
I also suggest lozenges such as Halls or Fisherman's Friend if needed, for local relief of throat irritation if you have this symptom.
I also encourage you to drink plenty of fluids, cold or hot, as you prefer.
If the symptoms persist for more than 7 days without improvement, you should consult a doctor.
I hope I've been helpful and I'm available if you have any other questions!
Tom Samaha, pharmacist