There are three ways to check for pregnancy at home using bleach, Pine Sol and Dandelion flower. When bleach is mixed with urine and there's a foam that forms, then it is a positive sign for pregnancy. If you mix Pine Sol with urine and there's a change in color, then it means you're pregnant. Dandelion flower when mixed with urine from a pregnant woman would produce red blisters. For an explanation on why homemade pregnancy tests work, go to this site: http://www.onlymyhealth.com/how-make-homemade-pregnancy-test-1306405491.
To make a homemade pregnancy test, you just need to take some Pine Sol, the cleaner, and pour it into a clear cup. Mix it with some of your urine. If the color changes within a few hours, you may be pregnant. if you suspect you are pregnant, you should get a blood test done at a doctor's office.
I know you can use toothpaste to test. You need white toothpaste and when you pour your urine over the toothpaste it is suppose to turn a bluish color. Not quite sure of the amounts but I think you can find information at http://www.negativepregnancytest.com