Thanks for the query.
You have to get treated for poly cystic ovaries.
And have to maintain the ideal weight for the height.
By these the scanty flow and irregular spotting etc. menstrual irregularities can be treated.
Usually IVF will be done after inducing the ovulation and by supplementing the required hormones.
So you may not have any problem in IVF due to irregular periods
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429