Are you absolutely sure that you weren't in a healing crisis when you stopped the MC? For some people it is like having a really bad cold. Do you have fever?
If you did break during a healing crisis it does not stop after you have broken but continues on. It's not unusual to feel even worse after you have broken if you broke during a healing crisis.
On a side note, a fast is usually the quickest and best way to get through a regular cold - it shortens the span of the cold.