The answer to this question depends on why you had the swollen spleen, and whether or not it is still swollen. There are various different illnesses that people get that cause an enlarged spleen. The spleen can get bigger because it houses white blood cells. If you have an infection, these white blood cells will multiply and make your spleen bigger. The infection that is known to cause this more than any other is mononucleosis (or just "mono"). This infection can cause an enlarged spleen that stays large for several months. There are rare cases of where the spleen ruptures if the person with mono is in a car accident or is playing a rough contact sport. Obviously a spleen rupture can be life threatening. Thus, we tell people to make sure that they don't play contact sports in the months following a mononucleosis infection. However, we don't remove the person's spleen. While someone can live without a spleen, it does put people at risk of bad infections.
I suggest that you schedule an appointment with your primary care physician
. The two of you can discuss whether or not your spleen is still enlarged and if this represents a real problem. If it does, then you can discuss what the next step in management is. Good luck.