Pierced Ear 2day? then I mest. Will it infect?

I got my ears pierced 2day. They used a gun and pierced both ears. It went realy smoothly. My sister told me my ear piercings looked gay so i bought these silver ones. Then when i put one on my left ear she said it looked gayer and to change it back to the one i had before. I tried to put it back but could not get it all the way through. It took me about 20 mins of poking the inside of my ear with the earing. I wiped it down with peroxide. Will it get infected. I had to foce the piearing realy bad just to get it through. My ear was realy red after. I am puting this ear care antiseptic for ear piercing on it. I'm realy worried.