Although your risk of complications for pregnancy go up the older you get that doesn't mean that you can't get pregnant safely at age 45.
I know a woman who was 50 years old and she got pregnant and she had no complications during her pregnancy and the baby was born healthy and is still thriving today at 10 years old.
He's a very healthy kid and was very healthy when he was born to his 50 year old mother.
So yes it's safe to get pregnant at 45 years old but just be aware that you may have complications during the pregnancy but not always.