nurse informed me it could be a "delayed pregnancy"

Hi,
Welcome to ehealthforum,
The pregnancy occurs (conception) when you ovulate. The egg is alive to be fertilized for about 24-48 hours after ovulation, after which it disintegrates. If the ovulation has been late, conception occurring will be late. Ovulation usually occurs within 4-7 days of taking last Clomid dose. If pregnancy has been confirmed, you should go ahead with getting serial HCG levels estimated. Doubling up of the hormone levels in 48-72 hours will show that pregnancy is going on smoothly. If levels are not adequate, then external hormonal supplements would be considered to be started to help you in preventing miscarriage/threatened abortion. A transvaginal scan done after 6-8 weeks of gestation will also help to confirm fetal heartbeat, gestational age of fetus/baby along with fetal viability (early scans can fail to detect fetal pole/heartbeat). Visit your doctor/gynecologist for further evaluation and assistance. You can consider getting the scan repeated after 1-2 weeks. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet.
Take care.