My period is due in four days and I've been experiencing a few pregnancy symptoms. Such as nausea, headaches, swollen tender breast(which are now veiny), and heartburn(which I rarely have but I had everyday during first pregnancy and now) throughout this week I have taken three tests, all faint line positive. A very noticeable positive but one line lighter than the other. Am I pregnant or could it be false positives?

False positives are very rare.

False positives are very rare.
I know and I feel pregnant but I'm also wondering if I bought bad tests?
I hear a lot of talk about false positives with first response early results.. I'm think of waiting a couple of days and try clear blue digital.