Can i be pregnant if i have sex 5 days to my period?

Safe sex: Never say "never". Although the timing would not be optimal, there is still a risk. Use protection every time if you don't want to become pregnant.

Too soon to know: 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.