Guinea pig problems (breathing, walking, toiletry, mouth)

my guinea pig has been breathing very off and loudly lately, it started as a kind of clicking sound at first and turned into something that sounds more severe, i posted a video of it too the vet facebook group that describes it better but it can be a diffetent pitch or speed or different breathing all together sometimes, its happening a lot more but she doesnt do it every second of the day, she also had a pink sharp thing infront of her mouth that i also attached with the video on the group but that dissapeared after a day, shes also walking more slowly and looks like she has a bit of a limp but i dont know what it was. I think she also had a bit of diarrhoea as it wasnt solid last night on her towel, could this all be old age? ive had her for maybe 3 or 4 years after i bought her from someone who couldnt take care of her properly daily, so she could be 5 for all i know, im just really worried for her.

Hello - I have a soft spot for guinea pigs and I'm sorry that yours is having a hard time.  Thats quite some list, involving multiple body systems:  a limp, fluidy poo?, clicking / changes in pitch when breathing and a sharp pink thing in front of her mouth (Im sorry; I havent seen a picture - G-pig tongues are usually rounded at the tip?).  Any one of these things, for me, sounds severe - perhaps an emergency - in its own right.  It may be that she is in pain.  'Old age,' as my Gran was fond of telling me, is not a disease and doesnt have to carry the symptoms of disease.  If signs of illness are seen, then that animal is just as ill as a young animal carrying those signs would be, but may be less well equipped to deal with it.  Behaviourally, guina-pigs, as a prey species, try to avoid showing signs of pain or weakness (in the wild it would get them eaten).  So if they are visibly struggling, it is possible that they require urgent veterinary attention; do you know a guinea-pig friendly vet or our of hours centre?  Whoever you speak to, if they ask you to come in, always ask for advice on transporting your girl in safely.  It is not always true that the more body systems / older an animal, the more ill they are, but I would be concerned - and guinea-pigs have a fast metabolic rate, so when they are struggling, things can change fast.  Wishing you both all the best.

Ps just to be clear, we would reccommend urgent triage for this case.