We are sorry to hear about your miscarriage.
An early miscarriage, with no intervention afterward, can be treated like a period and thus it is safe to perform bedikot once the bleeding has stopped.
If you had a procedure such as a D&C or D&E, then you should discuss with your physician when you are allowed to insert items into the vaginal canal. You should explain that the bedikah cloth is inserted only very briefly. If the moch dachuk would be medically problematic, it may be omitted this cycle. If necessary, you can reduce the number of bedikot to one per day for this cycle; if further reductions or modifications are indicated please get back to us or your local rabbi or Yoetzet Halacha.
Please see our article on miscarriage for more details.
Please feel free to get back to us with any further questions.
B’hatzlacha!