Keep records of your menstrual cycle
Mark the very first day of your normal menstrual cycle on the calendar. If there is irregular bleeding, mark the day that you encounter spotting or bleeding and in the meantime wait for the regular cycle to restore on its own. Keeping an up-to-date cycle record will provide you with the information about the day you will ovulate. The restoration of the normal cycle depends on the situation of the miscarriage and the complications that came with it.
Take your body temperature regularly
Check your temperature every morning as soon as you wake up with a basal body temperature. Note down this number on your cycle record calendar. Ovulation is expected to happen around two weeks after your miscarriage. During this process, your basal body temperature increases systematically that you can easily track it. Nevertheless, this method does not work if you suffer from a fever or infection in the aftermath of the miscarriage.
Monitor your situation and consult your doctor on a daily basis
Note down what your cervical mucous seems like every day. The cervical mucous cycle is similar to your regular menstrual cycle. Therefore, when you start having normal periods, you can depend on the cervical mucous to indicate ovulation. Watch out for mucous which is transparent, watery and stretchy such as an egg white. This mucous is fertile and accompanies ovulation.
Visit the doctor and have your HCG (pregnancy hormone) level monitored. The menstrual cycle is expected to return to normal when the HCG levels drop to zero because HCG blocks creation of hormones that result in ovulation. This will take around 14 days but can delay further as well. If you want the cycle to return, check HCG level to organise fertility later on.