Birth Control Pills?

Birth control pills are often used when regulating a cycle prior to cycling.  They are used by fertility specialists, also known as reproductive endocrinologist(RE) to manipulate your cycle.  For instance, my RE has me on a protocol along with my intended mother(IM) to sync our cycles to match one another.  We will both be preparing our bodies for this process.  My IM will be stimulating her body to produce as many eggs as possible and my body will be getting ready to accept her eggs once they have been fertilized with the sperm of my IF.  The embryos will be transferred to my uterus between 3 and 5 days after the eggs have been removed from her ovaries.  As of today, I have been on BCPs since January 25th.   Our transfer is tentatively scheduled for March 19!