Hi Nat, I seen your post and thought I'd give you a message. Last week I went to the dentist with swelling and lump on the floor of my mouth. I'm getting seen by a specialist tomorrow. 
All the symptoms you are describing are exactly like mine. 
Ive got it in my head I have cancer. Before even being diagnosed. I can't eat and I'm constantly peeing to the point its every 30mins. I keep checking in the mirror as I feel I'm losing weight. I feel my mind is tricking me into believing I have cancer. I might. I don't know till all the tests. But what I do know is I had an appetite before I walked into the dentist. Soon as I was told it might be serious my appetite has gone have no desire for food. I can't sleep. Sometimes anxiety can make you feel so ill. I never believed this but it really does. Try and speak to your doctor explain how your feeling and if they are a really good doctor they will refer you for further tests. Even when they know you are okay. Just to put your mind at ease. I hope this helps 

Victoria. 

Hello there

I am sorry to hear about the symptoms you have and appreciate it must be getting you down.

I'm afraid this forum cannot diagnose anyone or say what the matter is and it is best if you try and speak to your doctor again. They are in the best position to assess you and arrange more tests if needed.

Symptoms can be caused by a range of different causes and sometimes it can take a while to work out what might set off a symptom. Any cancer at your age would be extremely rare and even more so ovarian cancer so there is much more likely to be a less serious cause for how you are currently feeling. However when symptoms are ongoing it is important to go back to your doctor and let them examine you again and see what they say.

Health anxiety affects lots of people and can sometimes can bring symptoms on or make things feel so much worse. Please don't take this the wrong way as I am not saying all of this is in your mind, but being anxious may not be helping you. Anxiety UK and the NHS Every Mind Matters both have helpful tips and information to try and manage this.

Talk to your doctor when you can but in the meantime try not to dwell on things too much and avoid googling symptoms as this can cause lots of unnecessary worry.

Take care

Naomi