Not complaining and holding it in is holding back the chi?
Sounds to me like you need to release not block feelings if you want the chi to flow.
Are you surprised to notice blocked energy when you hold back/ suppress? I recommend learning releasing. If it continues you might want a check-up. Persistent physical manifestations shouldn't be ignored. Like exercising a weak muscle you expect to feel it while you get used to it and then enjoy it's increased strength. However if it persist in drawing attention to itself with pain, it should be addressed not suppressed.
Alex
