pregnancy symptoms do not always mean you are pregnant

So as I have posted on here before I have the unfortunate luck of having endometrial cancer, or cancer of the lining of one’s uterus. My cancer has unfortunately returned and I am going through my second bout of radiation. Between the cancer and the radiation I often do not feel well. I am often dizzy, nauseous. and exhausted. In order to try and help with the nausea I drink a lot of water and I eat saltines. This makes me need to use the bathroom frequently. I also cannot drink because it interacts with the heart medication that I am on in order to help prevent heart problems as a result of the radiation. All of these things are signs that people are pregnant. I am well aware of this. My close friends know that I have cancer but I don’t exactly broadcast it, simply because I do not want everyone and their brother knowing that I am sick. I go to a very small university where everyone knows everyone else’s business. Well it got back to me across the grapevine that there is a rumor going around that I am pregnant. As I can’t get pregnant, this is a very distressing rumor to me. The only way for me to dispel this rumor is to tell people that I have cancer. I don’t really want to do that, nor do I want have to be the girl who got herself pregnant either (not that there is anything wrong with being pregnant, but for some reason around my university is this huge thing) I really wish I could fight my battle privately without it being up for interpretation, and since it is getting to the point where I can no longer do that I feel like I am going to be forced to tell people. My point of this post though is why does it matter? There are lots of things that can cause those symptoms and not drinking is a choice, not something that only has one cause. I don’t know why people are so obsessed with other people being pregnant with babies that do not belong to them. If I was indeed pregnant and not just fighting off cancer I would feel the same way. I would not want everyone knowing that I was pregnant because it is nobody else’s business but the father  of the baby. I guess I am just frustrated at the lack of bodily autonomy women have when they are pregnant, hell anytime for that matter. What are all of you thinking?