I've been peeing in the sink for months
Why have you been peeing in the sink?
The toilet always gets clogged every day.
It's wrong to pee in the sink since it's not hygienic and can splash urine everywhere. You should contact a plumber to help with your toilet clogging so that you can use it and not the sink when you need to urinate.
I don't have time to contact the plumber and besides, I can't afford it.
Not being able to pay a plumber to fix the toilet is no excuse for using the sink as a urinal as it is gross. Borrow some money, call the plumber and get the toilet fixed.