Nasal Spray Question!!???!?!?!?

i am getting over strep throat right now and i'm very congested, the doctor subscribed a prescription nasal spray called patanase. Before i was subscribed this i took saline drops/spray and it ran up my nose and into the back of my throat...i hate that feeling...is there a way the i can just make it not go into my mouth? or is there a way to make it feel better? im scared to take it...(im only 13)(girl) so yeahh please answer if you are a pro at nasal spray or know anything about it! thank you!