Slight water damage to iphone 6

hey! So today my phone had gotten some water on it. I dried it off and shook the phone carefully to get rid of water. Well now when people call me i can only answer their calls and speak to them on speaker phone. Also if my phone is on ringer mode it doesnt ring nor do my buttons click like usually. When i adjust volume on the side of my phone it says im adjusting the headphone volume? :-| super upset with myself. I dont have insurance for the phone. Does this mean i have to go buy a whole new phone??

Thank you!!