So today I found out that my mom has cancer

So an hour ago I went upstairs to tell my mom that the food she made was good and better than what I anticipated and randomly she told me the results of her tests were bad really bad and she repeated that a couple of times so I knew something was up and a couple of minutes later while I was eating my dinner I asked mom so what were those results for and what’s the problem and she told me that she has cancer specifically stage three I don’t know what type but it’s cancer I know she does these tests every now and then so I hope it’s caught early and she’ll be fine but I’m a little scared for her and I don’t know what to do and i don’t know if this is important but I’m 17 and my mom is 46 I also think I’m the first one to know and I’m just confused