For some context, I’ve lived here for almost 4 years and in that time I’ve had health issues arise. I’ve always had rough periods (7 days, heavy bleeding, lots of cramping) but things have gotten a lot worse. I started having crazy bloating, stomach pain, nausea& dizziness, mood changes that don’t feel typical for me, headaches, light sensitivity , fatigue, and the cherry on top is that I’ve had minimum 11 days in between periods- pretty much two periods a month for almost two years. Other symptoms that I’ve explained away but now im seeing through a different lens. I was born with a tongue tie only got it fixed when I was 21 and I was a premature baby so my airways and immune system didn’t develop exactly as they should have- I’ve struggled with congestion, cough& postnatal drip for almost my whole life but it has been nonstop since living here. As well as getting unexplained skin rashes, shortness of breath, itchy eyes. I work with children so I’m exposed to colds fairly often but since living here when I get them they hit me considerably harder, I used to be able to load up on zicam and vitamins and avoid getting them all together but now that combination stands now chance, I get every cold the kiddos expose me to, they knock me down and the recovery takes so long. For example- I got a cold exactly a month ago from the kid I work with, I was mostly recovered within a week and a half but I am still dealing with major congestion/ stuffy nose, on and off sore throat. I use a navage daily (think netipot with motor and suction) and still no relief. I’ve  done a bunch of testing and my doctors can’t figure it out. I’ve seen two different women’s health doctors, I’ve seen my primary doctor, I’ve seen an allergist. Ive seen a dermatologist for the rashes. I’ve done blood testing- no anemia, thyroid issues. I’ve done a uterine ultrasound- no fibroids, polyps, pcos. Allergist came back with an allergy to horse dander, Potassium dichromate, Nickel sulfate , Gold sodium thiosulfate which is good info but does not explain the rashes/symptoms. I’ve also been in the process of getting adhd testing because my difficulty concentrating has significantly increased- I just thought as I got older and had many more responsibilities my ways of managing were less effective- now I’m not so sure. I also occasionally get numbness/ tingly feeling in my hands and arms. No dr explanation.   
I’m a 24f in generally good shape. I have never felt shortness of breath going up a flight of stairs until now, I don’t feel tired or like I should be out of breath yet I am? I’ve given up smokin weed thinking that may contribute to breathing difficulties but no difference.   
My cat is also having symptoms of coughing, sneezing,- hairball like fits but no hairball ever comes out, vomitting and diarrhea (inconsistently but happening where it never really has before) we’ve down worm testing and he was negative. In the process of waiting for blood test results to check his heart, kidney, liver, thyroid  function etc. may do a lung xray as well.   
The building I live in was built in the 50’s or 60’s, there are only windows and my door for ventilation- no fans, no ventilation. The water heater closet has major moisture issues & the lil pipe that connects into the wall doesn’t seem to me to be correctly secured to the ceiling- I told the landlord about the issues a year and a half ago and nothing was done. When I moved in there was mold on window frames and I continuously clean it out with bleach but it returns. I keep the windows open when I shower and dry off any moisture. I suspect there is mold growing through the shower grout as it’s supposed to be white but definitely doesn’t stay white.. there’s warping in the walls, bubbling paint and I had just thought it was because it is such an old building.. not so sure. I have an appointment in two weeks for blood testing and I’m waiting to hear back from my cats vet if they have a mycotoxin test they can run on him. Trying to navigate getting an inspection and if my landlord will cover it. I work hard but i have spent hundreds of dollars on my health tests and my cats and still no answers. It will only let me add videos so I’m doing that of everything mentioned here and will add a second comment with photos . I would love any thoughts yall have but please be kind. I’ve never experienced anything like this and didn’t know it could affect me in such a way or my pet. I’m open to any suggestions of what to try, how to navigate, knowledge on rental laws, etc.  

Apartment rental and I’m 98% sure there’s a serious mold issue