B.C.
According to this article:
https://www.caring.com/articles/7-medications-that-can-ca...
"More medications that can cause incontinence
Decongestants and antihistamines
Which ones: Brand names Sudafed, Contac, Benadryl; generic names pseudoephedrine, diphenhydramine
Why they may be culprits: Decongestants that contain pseudoephedrine tighten the urinary sphincter, causing urine retention, which in women is frequently followed by sudden overflow incontinence. However, in men who have leakage after prostate surgery, Sudafed can temporarily clamp down the bladder muscles, preventing leakage. Some antihistamines relax the bladder and also make you sleepy, which can cause incontinence in the elderly especially.
What to do: Try taking a different decongestant, such as loratadine (brand name Claritin), that doesn't cause bladder-related side effects."
According to this:
http://www.ehealthme.com/ds/claritin/urinary+incontinence
Incontinence sometimes happens but it's more usual if your elderly and taking Claritin.
So I guess I'm confused.
Maybe there's an underlying issue that just happened to manifest itself now?
Is she constipated?
Talking to her doctor is a great idea and I'm glad you'll be doing that.
Hope it gets solved soon but in the mean time Pullups might be a good idea.