The safety of a pregnancy achieved through an IVF approach is not just determined by the number of weeks. After a successful IVF procedure, the embryo is generally placed into uterus and monitoring of pregnancy starts through ultrasounds as well as hormonal testing. 12 weeks of pregnancy is the first trimester which can be referred to as a critical period. At the completion of first trimester- after 12 weeks, this risk is substantially reduced and most women tend to feel much more at ease with their pregnancies surviving. However, an IVF pregnancy is safe and viable only under various circumstances and requires regular monitoring as well as communication with eficient fertility specialist on a continuous basis to have the best maternal 

It could be the color of the food dye added. Consult your doctor if it persists over a longer time.

In general, changes in urine color can be influenced by various factors, including diet, hydration levels, medications, and certain medical conditions. If you have any ongoing concerns or notice persistent changes in urine color, seek guidance from your doctor.

The safety of an IVF pregnancy is determined by the overall health of both the mother and the developing fetus. Generally, it is safe after 12 weeks.

It is generally safe after the first trimester.

After almost 10 to 15 weeks, IVF pregnancy is considered to be safe.