I feel so gross and sweaty because I haven't taken a shower in a week
If you haven't showered in a week, why do you still look clean in your Facebook profile?
Those pictures are all from last week or before that, I've not taken a new one in a while because I look so bad right now.
Good hygiene is vital because it helps prevent you from getting or spreading germs and infectious diseases. Shower at least two to three times a week and make sure to use soap and water. I'd feel clean after this!
It's kind of hard to switch to new habits since I'm getting old. If I'm clean enough, I'd rather use natural powder and stay away from the bathroom where all that germs are.
If your bathroom is full of germs then take the time to clean it. That doesn't give you an excuse to not practice proper hygiene. If you fail to do so then people may notice you starting to smell.