before, after

[arzgol]

Is my sentence proper English?

Before the surgery he had lots of pain, but after that he got his health back on track .

Thank you so much for your reply.

[bhaisahab]

Is my sentence proper English?

Before the surgery he had lots of pain, but after that he got his health back on track .

Thank you so much for your reply.

It's OK, but use "it" instead of "that".