iPhoto hadn't been working properly on my Macbook Air, always needed to be repaired, then out of the blue it deleted the entire library and I'd like to recover my photos

My Macbook Air is very recent, only bought it a month ago. My iPhoto had started having some problems lately, gradually needing to be repaired more and more everytime i tried to add a photo tomy library. eventually, today, I tried to add a picture to it and it stopped working completely, I force quitted out of the application, and when i tried to open it back up it sasked me to select a library to open and there was none to choose from. So basically, my entire photo library was deleted and I want to fix the problem then recover it. Can someone please help me?