Serious side-effects from in vitro fertility treatment are relatively rare according to current evidence.
The drugs used to induce the superovulation involved in in vitro fertility and similar techniques are also widely used in other forms of fertility treatment.
They are used over short periods of time, and pass through the system relatively quickly.
The replacement of general anaesthetic with sedation for the egg collection procedure, and the avoidance of laparoscopy, has cut out a further source of risk.
However, it is also argued that the treatment is still too new for its long-term effects to be known, not just for the women who receive it, but also for the children born as a result.
Some limited research has been undertaken, but the numbers involved are comparatively small.
Despite experiencing no immediate side-effects from die drugs, some women remain concerned about the longer-term implications, and this contributes to their decision to stop.
If you find yourself in very severe pain, or with any unexpected symptom, make sure you report it to your clinic.
In emergencies, you may need to go to the casualty department of the local hospital.
If so, make sure you tell the staff you are having in vitro fertility treatment and that you think your symptoms may be related to it, and ask them to contact the doctors who have been treating you.
Other hospital staff may not be familiar with in vitro fertility or its associated complications, and may not know how to deal with your problems.