Worrying symptoms!?

Hi. I have been experiencing a lot of worrying symptoms lately and would like some advice. My periods have been very irregular (spotting and lasting over a week), I have been bleeding during and after sex with some pain and large clots, I have no appetite and feel full after eating a small amount, my belly is very large, swollen and hard and looks like I'm pregnant, I have localised pain in my left abdomen, back and pelvic area, I feel tired all the time but find it difficult to sleep, no energy, I feel dizzy a lot and have blind spots and blurred vision sometimes, I have a pain in the back of my neck, I have a new cough that has lasted over 8 weeks, difficulty breathing, tight feeling in my chest, pain in my stomach when I cough. I have an appointment with my GP in a few days to discuss these symptoms but I'm wondering are these symptoms very serious and need urgent emergency attention? If anyone could offer me some advice I would really appreciate it. Thank you. Love and blessings to all.