Hi there. Yes, agree with above. However, when you say the last day of ovulation. We ovulate around 24 hours. Some will give it a 48 hour window because you can get a positive result on an ovulation predictor test the day before you ovulate.
The best way to conceive is to track your cycle--- first day of period is first day of cycle. Then on cycle day 10, begin having sex every other day for the next 10 days. That, with consistency and time, usually catches the egg. good luck
So, you think you started a regular period? Best way to make sure would be to take a pregnancy test after you stop your period; maybe a few days later. I would venture to say no, but I'm not a doctor.