Advice

OK so a little background I've never been late I've aways been on time and have started on the exact day my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> said I would I'm in my early 20's and now I'm 2 weeks late and on the 4 test I've taken they are all negative I think I might just go crazy not knowing but then again I didn't realize I was late until my fiance pointed it out. I've been have cramps and keep feeling like I'm going to start but haven't. I've been peeing a lot more having headaches and getting really hot I don't know if they have anything to do with it but No tender bbs No sickness. I'm going to make an appointment with the doctor in the morning to see if they can get me in. Any advice of what's going on with me?