2 babies under 2?

Mir. • My husband + baby boy are the beats of my heart.
Panicking. My beautiful baby boy is 4.5 months old. Just found out yesterday I am pregnant. I was exclusively breastfeeding day and night and taking ovulation tests the days we had sex to ensure I wasn't ovulating. I never got one positive test. Still amazed we are pregnant again. Anyone have any advice at all for having babies this close together? We are in such shock and I am so scared! Thanks ladies