Thanks for the query.
Some amount of spotting can be seen in early pregnancy
because of causes like:
-Some women may have bleeding on expected day of periods even in pregnancy.
-Increased blood supply to local organs can cause spotting even on mild friction, as you strain because of constipation
that may affect tiny blood vessels in the genital tract leading to pinkish discharge and spotting.
-Recent travel or intercourse etc can lead to some spotting.
so if you are not symptoms like pain abdomen etc no need to bother but if your spotting increases or pain arises consult your doctor immediately.