Am I pregnant or is it in my head?

I haven’t been on here in forever and I have 4 kids! You’d think by now I would know this lol, but I’m having weird symptoms I don’t usually have, I’m 5 or 7 days away and I’m nauseous and feeling sick and my sciatic or however you spell it is starting to bother me again.. but I just don’t know what to think I’m getting a test soon but I took 2 over the weekend and they were negative but it was too soon, but idk if it even took we did the deed the 15th and I just don’t know, 5 kids is a lot (and yes I know where babies come from lol)