I am smelling gas, but no one else is.

I am genuinely loosing my mind. Last night I ended up calling the fire department because I kept smelling gas. They came in and checked, nothing absolutely nothing. I asked the firefighter and he was like, must be something else. But here's the thing, it's been 2 days and I'm still smelling it.

My husband is saying "Oh youre pregnant you're just smelling weird things" - NO ITS GAS. It smells like gas. I have gone over every theory in my head y'all even to the point of "what if I had station blew up?" - idk don't come at me- I'm losing my mind.

I went out of my apartment into the hall, nothing. It's no where in the apartment building EXCEPT MY APARTMENT. I'm so close to calling my mother in law and asking her to come over and smell my apartment. I've had the window open for an hour and I still smell it. It's bothering the hell out of me. I already have the flu so it's hard to sleep as is and this is making it a million times worse.

What do I do in this situation? I have until Friday until my son gets home from his dad's house. So I need to figure out what the actual hell in going on. Any theories because the firefighters said there's nothing on their radars. But I swear I smell it, it's so strong it is burning my nose and I'm loosing my mind because of it.

Edit: when I say I'm smelling gas I mean like Gasoline from a car.