Is bleach pregnancy test is accurate to detect pregnancy?

A bleach pregnancy test cannot be guaranteed to give you accurate results. It cannot detect the pregnancy hormone. Use an actual HPT a week to ten days after a missed period. Sooner than that the results may not be conclusive. ref: https://www.webmd.com/baby/bleach-pregnancy-test-what-to-know

No. Conception occurs within day or so of the sex. It takes about 3 weeks for the embryo to make enough HCG for a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow instructions for the test carefully.