Maybe, maybe not?

Hi! My name is Taylor and I’m scared I could be pregnant. I’m 19 and I had protected sex (condom) January 8th but I haven’t gotten my period yet. According to eve I’m now 17 Days late. (I used to use a different app that says I’m 14 Days late but regardless I’m late) In between the time of the day I was supposed to get my period, days leading up to getting my period and days after my missed period I’ve taken 4 test and each test negative. I’ve also started exercising so I don’t know if that threw my period off and I’m being paranoid or what. I was pregnant around this time last year and I was one day late and it showed on the test so wouldn’t it show now? The latest test I’ve taken was Thursday around maybe the 10 to 13th day late. I have no symptoms, no tender boobs or anything except for the missed period. I started googling stuff which is probably a bad idea lmao and part of me wants to take another test and the other part of me is saying stop wasting money since every test I had has been negative. I’m sorry it’s so lengthy 😅😅 I just wanted to include the proper details. I just felt this was a safe space to post this and talk about it so I’d love to get a response or two!