Hi Guys, since Molly was spayed this past Wendsday, shes been having problems with going potty, now I know this is somewhat normal, but I really am going out of my mind

On Friday, Molly started having accidents, actually after her incision opened this began happening, accidents in the house when she hasnt done it in a long time, going in her crate, guessing she cannot hold it and this is why, then when I take her outside she stoops for a while and nothing will come out.

I called the vet to tell them that she is still doing this, and they said its from the surgery and possibly to give her an asprin, but I really need bulldoggers advice I just dont kno what to do, when I called the vet, I said "Do you possibly think maybe she has a UTI" and they said no, that the uterus sits right on top of the bladder, and they removed the uterus so it will take a little bit for her to get back to normal.

Also, she is having trouble pooing, she will stoop for a while because she cant get it to come out, probally because its somewhat painful and only little bits will come out , not like she normally goes.

I know this could all be from surgery, but I just want to make sure its nothing else. Does anyone suggest I give her an asprin? Let me know what you all think, sorry I keep posting messages about her pottying problems, its just to the point we are afraid to let her out of her crate besides to feed and go potty because we are afraid of her having loose bowel movements all over house, and theres no way to contain her anymore becuase shes so big I just dont kno what to do ... could you tell this face she has to be in her cage because shes a pottyhead?