you can confirm successful abortion
if no products of conception found on scan then that can be called as successful abortion.
some causes like chromosomal abnormalities can repeat in subsequent pregnancy
but don't worry those are rare,
after abortion you can have spotting up to 1 to 2 weeks,
in case of D&C pelvic inflammatory disease
like consequences can happen rarely.
as all these are rare possibilities hopefully you may not have any problem in future pregnancy.