Question!

So I have an almost 3 year old and have had one mc . Both times I knew early I was pregnant. Now I'm feeling very pregnant and I'm almost 9 days late. I took one test the other day at 7 days late and got negative . I know I should know this already but am I just testing to early? I have sore breasts ,consiptation, nausea, bloating and heartburn all the good stuff. How long should I wait till I test again!?