Well.. we had unprotected sex but I know I didn't nor precum. But she took 3 pregnancy tests. Days after that sex we had and all tests came out to 3 positives and 1 negative. Idk if she's pregnant.. she didn't miss her period however it only lasted 3 days ! :( she's not experiencing any symptoms though. But those pregnancy tests are worrying me so much.

I don't understand, if you had unprotected sex you wudnt be able to tell a few days lter if you were pregnant. A pregnancy takes longer than that to show up on a test. I suggest instead of being unsure you go to your doctor and have a proper test done xx

As posey_84 said, a pregnancy would not show up in just days. Could she have been pregnant from an earlier time? In the vast majority of cases, a positive pregnancy test is a true positive, so she needs to have this confirmed. She may have not followed the directions exactly... reading the test passed the time allocated, for example, may give a false result.