came here; coming here
Literal phrase meaning 'having come here' or 'now that (someone) has come here'. Used as a clause or adverbial phrase.
Now that I've come here, I finally understand his true feelings.
Idiomatic use meaning 'at this late stage' or 'now, after all this time'. Often implies a sudden change or unexpected development.
At this stage, it suddenly started raining.
Recently, he changed his attitude.