Might have testicles cancer

Hi all 

I recently find out that I had a lump on my left testicle so I went to see my local gp and was told it might be a cyst and he refer me to get an ultrasound and that is today so the doctor from the ultrasound told me today that it might highly be testicles cancer and that I need an expect to know what the abnormal is and booked me in for next week. I am very worried and stress and scared and dont know how to deal with this information.