Frozen embryos is a common way for couples to maximise the chance of falling pregnant from a single IVF or ICSI cycle. When using frozen embryos, there is a process of thawing the embryos and then transferring them to the uterus. There are three ways in which a uterus is prepared for the transfer of a thawed frozen embryo. 

A recent study looked into the dose of FSH (a follicle stimulating hormone) given during IVF to see if it affects the number of eggs or the number of embryos.

A chemical pregnancy is a very early pregnancy loss, usually before the fifth week. The egg is fertilised, and starts to implant in the uterus. Chemical pregnancies are very common and as they occur not long after conception and many couples may not realise they have had a chemical pregnancy.