7 days late & keep getting negative results

I’m I pregnant? Idk if my period is irregular or not due to me just only having my period 2 twice since after I stop breastfeeding my 4 month old 2 months ago and from when I started it been on time for what I know but I’m confused on why it’s saying negative on each test I took and I’m 7 days late so I’m not sure my period just delayed or maybe I’m ovulating cause my discharge is like egg white just want to know if this is normal