### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I was put on Clomid this month for luteal phase defect days 3-7. I have been charting my bbt and had a signficant drop on cd 13 and a spike on cd 14 and then it dropped a little for two days in a row and then spiked up much higher and has remained at the higher temperatures for the past 11 days. Is that normal? before clomid I would have a drop and then a spike that stayed up for about 9 days and then would drop the day I started. I have 28-30 day cycles. I took a hpt this morning and received a negative. Not sure which day I ovulated.

### output:

Hallow Dear, Pregnancy test on urine (HPT) would not be useful to ascertain or even detect ovulation. These tests are specifically meant to diagnose pregnancy. Your BBT chart changes suggest that you have ovulated on the day when you had an ascending spike. Just before the ovulation, there is a Chat Doctor.  Then again there is a fall by half a degree and the temperature remains that high. You are on Closed; i.e. Camphene citrate. This medicine can cause release of more than one eggs. Hence, you had two spikes of temperature rise. However, to ascertain the evidence of ovulation, ultrasonography is the best tool at our hands. Ovulation monitoring by USG can spot the day of ovulation. It can inform us about the number of egg released also. Apart from the visual evidence of ovulation, it provides following important relevant information:1. Follicular size at the time of ovulation: Follicles between 18 mm and 21 mm release the healthiest eggs which can result into successful pregnancies. It may facilitate the decision of Chat Doctor injection if planned for. 2. Endometrial thickness: Uterine lining (endometrium) between 9 mm to 14 mm thickness is most conducive for the implantation of the fertilized ovum. I hope you will take help of USG in future rather than just relying on BBT chart. 