No positive opk??

RUX • TTC for second baby 😊😍

This is my first round of letrozole. 5mg per day. Its already cycle day 16 today and i haven't got any postive opks.. Every time its very very faint. Sometimes it feels yeah am getting closer but thats not the case. Am doing opks from cd6 2 times a day so that i won't miss it.

And from today i am already expecting period kinda symptoms(diarrhoea, sharp niddle pain in uterus, cramps) these symptoms only come when i am getting closer to my period. I don't know whats happening...

Am also taking progesterone getatin 200mg from Cycle day 14 to 28 as prescribed by my doctor.

Note:My bbt wqs dropped to 96.05 degree F today.. Before thay it remained costand aroun 96.54 to 96.75 ..

Any advice would be great help