Hi, I have learned from experience that those "Google Searches" are the worst thing a person can do, I have scared myself numerous times only to find out from my doctor that what I was scared of was nothing.
I think that maybe you are feeling the effects of the nose drops, when I used them they would sometimes trickle down to my throat and that would cause the weird feelings. However, it is continues, for your peace of mind, I would just ask your GP or even pharmacist.