I’m 22 years old and for the past several months I’ve been feeling unusually fatigued. In the past 3 weeks, I’ve had 3 illnesses. Back to back. 
I had a cold, then a stomach bug and now I’ve got some mystery illness which doesn’t make sense. I had body aches and chills last night, woke up this morning and my throat feels a bit tight but apart from that I’m okay-ish. I haven’t left the house and the rest of my household are fine, so I don’t think it’s viral or bacterial. 

my mom was a very heavy smoker, smoking up to 60 cigarettes a day. She would smoke inside, I was always breathing in her cigarette smoke. She passed away from cancer when I was 15. 
I am genuinely concerned that I could have cancer, I go to bed at night and when I wake up I’ve been asleep 12 hours sometimes. My days just slip away from me, I’m a mother to 2 babies so I cannot live like this any longer. I’ve booked a GP appointment but I wanted to post here as well to get advice/opinions.