"The pain I felt when I would see him cry sickens me."
There is the verb 'felt,' which is past and the verb 'sickens,' which is present tense.
Im very confused right now,help!
However, you have another problem in your sentence: the 'would' of past practice should appear in the main clause (within the subject), not the subordinate clause. It should read:
The pain I would feel when I saw him cry sickens/sickened me.
People are waiting to help.
Related forum topics: