Hey ladies i have problem to discuss

I'm trying to convince since 4 years.

I have 25 days cycle of menstrual period

Never ever happened in 4 years that my period is missed

But now i have missed 1 day of my periods

And then spotting start with cramps

I searched on Google whta does it mean?

Google says its implantation cramping or bleeding you should wait for one or two day

Then Suddenly i saw a blood clot .

Now I'm confused

Anyone tell me what's going on with me.?

Its a pregnancy symptom or a period?