Anxiety more then ever! (A bit of a long read)

So I have had servre worries of cancer for a while (in my previous posts) I'm 21, female and my main worry is leukaemia.  Some days are better then others, the only good points is I'm not feeling tired or run down and I work 12 hour shifts! I have no night sweats, not had any ilnesses as of yet this year, I eat and drink really well. 

It started when I noticed like random old bruises on my thighs about 4 or so at a time, they'd always go and never get bigger, sometimes I'd remember where they came from but sometimes I wouldn't or I'd find them after a night of drinking. 

I recently had ever so slightly bleeding on one gum when brushing but has since stopped with a new toothpaste and mouthwash. Any cuts or bruises that I have encountered have always healed and gone on there own pretty quickly. But on and off I've had dry lips (in the corners) and have gone in a couple of days with vassaline. But now they are like red patches, not cracked or oozing just slightly sore (been going on under a week) , I had an over the phone appointment with the doctor which she said it sounds like a fungal infection and has prescribed me some cream which I am yet to pick up. But she has sent me into a crazy melt down by saying "if it doesn't go we will need to do blood tests" which because I suffer from health anxiety sent me over the edge because I'm linking this as another symptom! I asked why and she said you might have an iron defficancy, but surely I would know ? I'd be tired etc which I'm not! So now I'm taking all of this as another symptom of what I'm dreading. 

I also am constantly checking lymph nodes for lumps (don't even really know what I'm feeling for) but I'm pushing right in on my neck and convincing myself I can feel something hard. Another thing any ache and pain I feel I really panic, but I always put it down to my job and being on my feet, bending over and lifting 12 hours a day and lastly I have been thinking I have petechia I have random red dots here and there not a lot some blanch some don't some go away and some don't and I must include I only notice these because I inspect my skin with my phone tourch otherwise I'd probably not notice them! I just need some sort of reassurance that would i know if I had this terrible illness ? Would my symptoms be way worse ? Thank you.

*** the fear of leukaemia started around 3 months ago

Hi Ebony ,I (and most of us on here ) know where your coming from .I read your post and straight away think your over thinking everything , your anxiety is through the roof. I don’t think for one minute (touch wood ) you have any of these illnesses you think you have ,but when people try and tell me I’m ok I don’t believe them .A simple sentence from the docs about having blood tests would have sent me in major panic .we can see in others and rationalise but come to ourselves we can’t .health anxiety is a condition you can not help please go to your doctor tell him /she everything and hopefully you l be put on the right track with medication/therapy don’t let it drag on .good  luck and try some diversions x

Hi thank you so much, the doctor says the red patches on either side of my lips are either fungal or bacterial infection and of course I have straight away thought it's because I have that horrible illness because like why would I randomly get an infection on the corner of my lips?! 

My mum said it's barley even noticeable but to me it's 100x worse! So when she mentioned blood tests if they don't go with the prescribed cream I thought my worst fears were confirmed ! I did explain I have 0 symptoms of low iron or anything like that to which she kind of said it is most likely not caused by that, still didn't reassure me! I actually broke down on the phone to the doctor and she did say it seems like everything is caused by anxiety, but I still don't believe it. It's like I feel I'm walking around with this illness and it's going to be too far along by the time I get diagnosed, does that sound mad? And I'm far too scared to get a blood test in case of bad results.. this time last year I was a different person, I was care free not worried about health at all, I don't know how I can get back to my normal self!