TTC for the first time

My husband and I have been married slightly over a year. We started TTC about 8months now. I have irregular periods and I finally have d courage to see a gynecologist and explain my situation to him. So he prescribed pevera which I

should start taking on the 1st of next month for 10days and stop and continue the other month to regulate my period. So I have been feeling pains in my lower back and tender breast. I started doing the bbt this morning and it was looking look and I took the opk also just to know my options. Any assistance or advice will be highly appreciated. I see a really fainted line. Should I take another in the evening?