Acid reflux

So I just found out my baby has acid reflux and a heart murmur and I'm very upset at this, he have been crying for a whole week and I thought it was because he was fighting his sleep but come to find out it was acid reflux. He is only 2 months old and I've really really feel bad. I would just lay him down and let him cry because I was so overwhelmed,I didn't want to hurt him and I'm just truly upset right now, feel like the worst mother ever