Do ideal BBT raise during ovulation necessary to conceive?

Hi doctor,

I was diagnosed with PCOS when I was 17 years old and from there on I was taking Diane 35 to regulate my periods. I was having three months gap between periods and sometimes was regular before treatment.

Now I am 25 years old, married and trying to conceive. So I had stopped Diane 35 last month. Since then we tried naturally for a few months. But it did not work out. So we started with treatments.

The doctor initially put me on Ovacare myo and other vitamin E tablets using which I got my periods on time. This continued for a month. Next she put me on Ovacare and Endothik and post 15 days, I was put on Duphaston. This too did not help to conceive.

Next, my follicle study was done. I was checked on the 12th day where my follicle was not that matured and ET was just 7. I was called on 15th day which showed my follicle in the left ovary was 19 mm and ET was 10.2 mm. The doctor gave me an HCG trigger injection. I was asked to try in this period. So I and my husband had contact from 14th, 15th, 17th day and also 18th day. I was called on the 18th day which revealed that my follicle had ruptured and it was a fresh one since it has some fluid around it.

So since it is confirmed ovulation, I expected my temperature to rise. I had not checked my BBT before but when I did it on 20th day, it showed a temperature of 36.1 celcius. This is way too less right? With HCG shot and ovulation confirmation, I taught it would rise. Is there some issue here?

I am given Duphaston and Mbryo safe sachets to be taken. Please advise if this cycle too I do not have any chance?

Thank you doctor,

Yes, that is the next step the doctor has advised too. This gives me some relief.