Blood clot after period?

Ilda
Well i finished my pwriod about 4-5 days ago and today i went to the restmoon and felt a clot pass i looked and there was a clot and blood in the toillet. My period was a little different this last time..i was 3 days late before i started and i did last my usual 5 days but it was not as heavy as my previous periods... Could i be pregnant or could i be having a miscarriage..no pain by the way