I and my girlfriend had sex(unpr.. )..
She is now 8 days late to her cycles
We did pregnancy test's 3 times but all tym it is negative
She don't feel ny symptom of pregnancy..
What to do now
Please help..?

You've tested too early. Wait until 14 days after missed period. Then, test with first morning urine.

Can blood test give some answer now??

No... waiting is all that will give you an answer now.

You need to wait until after her next period is due and then take a test.

Wait until she's at least 2 weeks late and then test using first morning urine. If that test is negative then wait until her next period is due. If she misses it, then test again, or go to the doctor for a blood test.

False negatives are very common, especially if you test too early. It can take several months (for some women) before getting a reliable answer using a home pregnancy test.