Striking nurses outside the Health Centre in Carrick last Wednesday.
The INMO Executive Council are meeting today to discuss further industrial action on top of the five days already announced.
Industrial action is planned for this Tuesday and Thursday, February 5 and 7, and for three days the following week (February 12, 13 and 14).
37,000 nurses staged their first 24-hour strike on Wednesday leading to thousands of appointments being cancelled.
Nurses in Carrick-on-Shannon took to the picket lines last Wednesday, braving the snowy and icy conditions.
The union says the government has not made any "serious proposals" to avert more strikes and say they have been forced into this position.
The INMO says it will plan for further action if it does not get government support.
Meanwhile, the Psychiatric Nurses Association (PNA) are set to hold further action next week on February 5, 6 and 7, as well planning to escalate this to a three-day strike on the same days as the INMO.
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