Question about testing for mold in home

I know this is a really long post, but Google isn't helping me at all.

I rent (trashy, I know), and I'm pretty sure I have mold in my bathroom ceiling that's making me sick. Besides the smell, I'm having many symptoms of mold exposure, including waking up every morning extremely conjested and with a headache. I start to feel the same way not long after I get home every day. When I'm here I'm always thirsty, I get dizzy, and I have multiple respiratory symptoms. After I'm out of here for about 30 minutes or so I feel much better.

A few months ago, the pipes in the apartment above me were leaking. There was visible black mold on the ceiling along with visible water damage. The first time I called maintenance, they came and painted over the visible mold with latex paint (which any idiot knows doesn't kill mold). About a month or so later, it was visible again so I called maintenance, again. He came and sprayed bleach on the ceiling and told me that it was mildew and I didn't know what I was talking about. At that point, besides being extremely pissed off, I realized that they weren't going to do anything about it, so I said frick it. The pipes above me continued to leak...mold and water damage spread. About 2 months later the ceiling above my bathtub caved in because it was saturated from water damage. It was about a 3 foot by 5 foot section.

They relocated me for 4 days so they could repair the damage and "kill" the mold. Welp, they only replaced the part of the sheet rock that caved in instead of replacing the entire ceiling. There is still some visible water damage, however, there is no visible mold at this point.

When the ceiling caved in, there was extensive water damage to the structural beams, along with a shite load of visible black mold. I immediately got a terrible headache, sneezing, etc. and had to wait outside for maintenance to come. They fixed the leak, replaced the sheet rock, painted the ceiling and moved me back in. There is no way they had time to properly handle the mold. I'm almost positive that the only thing they did was fix the leak and replace ceiling.

Can mold on the structural beams be making me sick? I've been trying to find info online about testing for mold, and most sites mention home testing kits. What is a good home testing kit to buy and are they accurate? There is a mold clause in my lease. Basically, if it tests positive for mold they either have to fix it or I can gtfo without penalty.

tl;dr. Mold in bathroom ceiling. I need a good home testing kit (if such a thing exists). Any recommendations are greatly appreciated. TIA.