Make sure 100% that you are not pregnant before you have your next shot. Being pregnant and having depo is dangerous, Just read the pamphlet in the depo box. There can be birth defects and all sorts of problems. Saying that tho, I do know of a girl who was on depo and fell pregnant and all was ok. Even so, just make sure first.

Jo

Chemical contraceptives have never worked for me at all!  Some women will fall pregnant no matter how many hormones you stuff in their bodies.

I'd take another test in a few days if you are still feeling pregnant.  As for the hormones affecting the results, most tests say that they don't so I would say it is just too soon to tell.  Next time, ask for a blood test.  More accurate and will be able to rule out any other issues too.