Hi,
Rise in temperature does indicate ovulation. This can be correlated with other signs like ovulation pain at mid-cycle or changes in cervical mucus. The cervical mucus at the time of ovulation becomes sticky and can be pulled into a thread. The most accurate is ultrasonographic monitoring of ovulation. Consult your Doctor for difficulty in conceiving, as there may be other factors involved.
Hope this helps. Take care and good luck.
Thank you for taking the time to reply.