We recognize the difficulty of extending your time in
niddah even further. But unfortunately, once a cut is stitched, it is not possible to remove the stitches and then redo them. You can discuss with your physician the minimum time for suture so you do not need to delay longer than needed.
While there is generally a strong preference to
immerse on time, mikveh does sometimes need to be delayed in cases like this.
Refuah sheleimah!