trouble peeing

My little boy Oswald is having discomfort peeing and pooping. He is 2 years old and recently (about 2 weeks ago) got off of antibiotics for a URI. He had issues going to the bathroom while on the antibiotics but he was on Natural Science Digestive Support (and still is) and that really helped...

As mentioned in my other post, I'm having a lot of issues with the pigs health lately. Every now and again I noticed Toast squealing sometimes, I then realised it was when she was doing the toilet, but not everytime. I've also noticed an increase in calcium when she's peeing and sometimes it...

Sorry for the gross pictures, I just wanted to be sure. My other Guinea pig (both female) had a similar problem a few months before she passed. They're both are (and was) pretty young. Probably around 6 years old. Anyways, her genitals are pretty tender and she screams whenever I touch around...