There is no need to wait for 3 months after a miscarriage to conceive as per evidence based practice. You can try to conceive.
If you are not Sure when you are ovulating due to irregular or prolonged cycle length, then ovulation induction may be beneficial for you. Please visit a Fertility specialist on the day 2 or 3 of your periods for a detailed scan and hormonal evaluation. Simultaneously semen analysis must be done. After evaluation a plan can be formulated for your ovulation induction.
Next Steps
You could connect with me online if you wish to for a detailed discussion on the same. Also would like to know the details of the miscarriage, duration of married life etc to see if any further evaluation is required.
Health Tips
Please don't do ovulation induction without scan monitoring. Please don't take any Fertility medication without scan on day 2 or 3 of periods and further Follicular monitoring by serial scans.