Suggest Possible Tests To Confirm Pregnancy

I think i may be pregnant. I'm broke right now cause I'm in between jobs, so i cant justgo out and buy a pregnancy test. I've hadwhat i thought might be periods, but they are lighter and last 3-4 days. Ive been eating and urinating a lot. Also, just today, I tried this homemade pregnancy test made with bleach. You take a cup of bleach and add your urine to it and if it fizzles or foams you might be pregnant... It said something about pH levels in urine being different when you are pregnant... Mine fizzled and then after like 5 seconds it foamed right up. What do you think?