My period is 24 days late i have already taken 2 preg test and they came out neg, my last periods 1st day was july 19? am i preg??

Have you been: To your doc for a pregnancy blood test? Secondly missing a period does not necessarily mean that you are pregnant. If your body is under a lot of stress, you' ve had sudden weight loss or gain, have hormonal imbalance( sex or thyroid) etc you could miss a period. If you've however engaged on unprotected sex at the rigor time then by all means see your doctor for the blood test.