Can nose infection affect my hair transplant results? 3 months post-op: Results are good so far, but last week...

I was recovering of a mild flu/cold, when 1 day I overused a nasal decongestant (naphazoline nose drops) and got worse (forehead headaches, blocked nose). NO fever, NO cough. I was prescribed Prednisolone and antibiotic just in case I got an infection caused by the nasal med. 2 questions: 1-If I did get a sinus infection,can it harm my HT results somehow? 2-This nasal med is a local vasoconstrictor. If I overdosed it, can it have affected blood flow to new grafts on scalp n avoid them to grow?