anyone trying for #2

Hey mommas, anyone out there trying for number two, but having more trouble than with number one? We conceived our son without trying really, sex just once the day after ovulation. Fast forward and he's two years and 1 month old and we are now starting cycle 9 TTC #2😪 it was so simple the first time that I'm worried my csection is the reason I'm not conceiveing this time around. Anyone have a similar situation?!