I might be a week or two pregnant if i take the test will it show accurate or should i wait to take the test?

Two weeks : Wait another week to be sure. If negative repeat after another week.

Pregnancy test: 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.