Alhamdullillah I'm pregnant

Have always had this feeling that i can never be pregnant. Maybe cuz of my age thats 37 already and i'm overweight. Was about to go for exercise lessons when i realised I've missed my menses for almost 3 weeks. Took 3 tests kits and all turns out positive. I was still in disbelieve that i tried another 3 with one of it is clearblue digital saying I'm pregnant! Omg!! Unbelievable! Will be going for my 1st ultrasound check with the Doc this Friday. I'm praying that i will hear a heartbeat from my baby. That will be my Dad's birthday present...