I get stabbing pain also in vagina/rectum sometimes when i need or am going to the loo. it is also something i have had for ages since being badly constipated so has nothing to do with surgery. wonder if you consultant will know what it is? i heard it is common in those dealing with constipation and people who dont have bowel issues can get it - it could be Proctalgia Fulax which i believe it is involuntary muscle spasms deep inside the rectum. i have heard also it can be caused by a tight anal spincter or anal fissure which is a tear. if you search online then you might get some more information. i find a hot bath helps, but not always.
i hope you are progressing and getting well though.
1997: Diagnosed IBS
2003: Pelvic floor repair surgery
2006: STARR surgery for mucosal prolapse/Obstructive Defaecation Syndrome. Also diagnosed with slow transit
2007: No difference. Had MRI scan showing a partial volvulus
2007: Therefore surgeon recommended a sigmoid resection which resulted in immediate colonic inertia
2008: Now contemplating colectomy as I need to take up to 30 senna tablets daily for some kind of bowel movement (albeit not 'normal' or all at once). In discomfort/pain most days.
Scared to have TC as told I could become incontinent - but looking to have surgery before end of year hopefully