Mazal tov on the birth of your baby!
You can perform bedikot now, unless your physician has instructed you not to insert anything into the vagina before your checkup – but only if you take great care to be gentle. If you find a bedikah painful with some blood, then there is the possibility of an irritation. Although your bedikah may not be invalid (contact us should this occur), in this case it would be advisable to give the area more time to heal.
You may add a drop of water to a bedikah cloth in order to soften it. Prewashing also can soften a cloth. Performing a bedikah in a more comfortable position (such as with one leg propped on a stool) may also help.