getting pregnant

hey everyone. i'm a single 35-year-old and feel like my biological clock is ticking. i've done my search for a donor and found one. so everything is ready to start. but these last few days i've started to panic heavily. can i really do this alone. what if i don't succeed. do i have enough income to provide good care for my child. do i want to turn my whole life upside down. does anyone here have experience with this too?