If it's actually a positive, then no, stress can't give you a positive pregnancy test.
Its a little too soon for a home prego test. It normally says to take it a week after your missed period. Yes stress can cause a delayed period. But it doesnt cause a positive test. However, there is always a chance of false positive. Wait afew more days and take another one. If it says yes then you should get it confirmed with a doctor
I took my test the day my period was supposed to come, and at night and it was positive. If you're concerned go get a digital test. If it comes back positive then you are, if not then your prolly not.
False positives are highly unlikely. A positive only shows if your producing the hormone, you only produce the hormone if your pregnant... I took two pregnancy tests at 3 days late with a faint line, a clear blue confirmed my pregnancy, im now 19 weeks. Congrats I say!
With all 3 of my pregnancys I took the test 5 days b4 my missed period and always got a positive some it would be faint but was there stress like said will not cause a positive test take one with your 1st morning urine in a few more days ..... goodluck