Preggy at 41 years old

Hello momshies..I am 41 yrs old, my last child is already 13. I have been delayed for a mnth and experienced some pregnancy signs such as feeling bloated,cramping on my lower abdomen,fatigue,always feel sleepy,nausea,headaches..except the morning sickness,craving for food/aversion to some food,and vomitting..my question is -- is it possible that I'm pregnant at this age? I haven't had my PT yet,but I am hopeful that I am really pregnant..I've been waiting for this for a long time now...