Thanks for the query.
Yes, possibly the bleeding could be the sign of starting of the abortion
Usually after completing the total tablet of the kits within 12 hours the spotting can be expected and the process will complete in 48 hours usually.
I hope you took the tablet only after confirming the intrauterine pregnancy
and excluding the ectopic pregnancy.
You wait for one more day possibly by that time the bleeding will increase and products of conception will come out.
If even after 24 hours only spotting continues better to consult gynecologist once to get examined and to take opinion.