It's totally a personal choice and good luck with whatever you both decide.
My sis was in a similar situation. She had DS1 and then waited a year and started trying again. It took 5 long hard emotionally fraught years, 3 mcs and surgery to remove endo before she became pregnant with DS2, 7 months after DS2 was born she became pregnant with DS3 without even trying (literally, it was a lovely wee surprise). You never know what can happen.
Edited by MrsMojo