Well, hopefully the first effect of the drug was to cure whatever was wrong with you!
If you did not notice anything at the time, then there probably wasn't much effect (outwardly). The only long term effect of spiro is testosterone reduction. Often, if you discontinue its use, testosterone production will return. In some cases it won't. A quick sperm test (count and motility) would tell you what you status is. It *might* have made you sterile, or not. It depends on a lot of factors, especially how long you took it.