Hey hun,
I am all for doing what makes you happy and doing to whatever makes you feel confident, but I feel like there is an underlying issue that could be fixed without a nose job. Have you seen a psychiatrist first? Maybe you should visit one and maybe if you get help then you wouldn't feel the need to want a nose job. Sometimes we reflect minor insecurities about ourselves that make yourself feel even worse.
If you get a nose job, you will find something else to be insecure about. Trust me. Always remember that a nose job isn't going to change who you are on the inside and that it isn't going to be like as soon as you get your new nose you are going to be this new person. Many people that get plastic surgery still aren't happy with who they are and it's because they think that getting surgery will make them happier but it doesn't. There has been studies that showed that Breast implants are linked to higher suicide rates which shows that surgery did nothing to make them feel better.
Lastly, nose jobs are a hit or miss. They either look good, or they look even worse. Is it really worse the risk? There are non permanent nose jobs that are available to get if you decide to get one which is a better option. But my main point is to love yourself! We all have insecurities, there is no point of beating yourself up about it. If someone truly loves you, it should be for the inside and not the outside.
Hope this helps x