Blood clot and no period

Patchelie

On March, 8th I started to have some light pinkish spotting (only when I wiped), and since then but on March 16th I only lost a huge blood clot (no blood beside), I am still waiting for my periods to come. But not a single spot of blood ever since, it has been 11 days since that episode…

Should I be concerned ? Was it my period or Am I pregnant?