To summarize your situation, it sounds like your apartment has a serious mold/fungus problem which is causing your health issues.
If you’re not confident that this is true you could test it to be sure (e.g., by living someplace else for a week), but if you accept that it’s true then you can plan the next step. You have a few options:
Option 1 is for you to move. It will take some work, but it’s something that you know how to do (you’ve done it before) and it’s the surest way to get away from the fungus. You could get other people to help you.
Option 2 is to try to rid your apartment of the fungus. That is also going to be a lot of work, and it involves technical knowledge/skills which you don’t have (it’s not just a matter of some vacuuming and dusting). There is probably information about it online, or you could try to find an expert to help or at least advise you. You also don’t know if it will succeed—you might just reduce the amount of fungus, only to have it grow right back. If you go for this option you should get help, probably including the help of the landlady, since it is her apartment (and it sounds like she’ll want to help).
Option 3 is to do nothing and stay in your apartment for the next year. If you do that, your health probably won’t get any better. Migraines, lack of energy, difficulty doing things—those problems will all continue. They might even get worse with continued exposure, or cause more permanent problems (I don’t know what the exact risks are—that’s something else to look up online or check with experts on). (Unless your health problems have been seasonal—then they might become somewhat less bad in the winter and then blossom again in the spring.) You’d be choosing another year of more of the same, and it will continue to be hard to do the things that you’re planning—the visa application, moving, getting married. If you try option 2 and don’t do a good enough job of it, it could easily collapse into option 3.
To summarize your situation, it sounds like your apartment has a serious mold/fungus problem which is causing your health issues.
If you’re not confident that this is true you could test it to be sure (e.g., by living someplace else for a week), but if you accept that it’s true then you can plan the next step. You have a few options:
Option 1 is for you to move. It will take some work, but it’s something that you know how to do (you’ve done it before) and it’s the surest way to get away from the fungus. You could get other people to help you.
Option 2 is to try to rid your apartment of the fungus. That is also going to be a lot of work, and it involves technical knowledge/skills which you don’t have (it’s not just a matter of some vacuuming and dusting). There is probably information about it online, or you could try to find an expert to help or at least advise you. You also don’t know if it will succeed—you might just reduce the amount of fungus, only to have it grow right back. If you go for this option you should get help, probably including the help of the landlady, since it is her apartment (and it sounds like she’ll want to help).
Option 3 is to do nothing and stay in your apartment for the next year. If you do that, your health probably won’t get any better. Migraines, lack of energy, difficulty doing things—those problems will all continue. They might even get worse with continued exposure, or cause more permanent problems (I don’t know what the exact risks are—that’s something else to look up online or check with experts on). (Unless your health problems have been seasonal—then they might become somewhat less bad in the winter and then blossom again in the spring.) You’d be choosing another year of more of the same, and it will continue to be hard to do the things that you’re planning—the visa application, moving, getting married. If you try option 2 and don’t do a good enough job of it, it could easily collapse into option 3.