Hi thanks for your question.Hcg
tigger shot is given to ripen the griffin follicle and for maturation of the egg. Since Hcg is produced during pregnancy
, it produces symptoms like pregnancy, so the delayed period could be due to HCG shot. Pregnancy could be anther possibility but you have done the dye test (should have not done as it can displace fertilized ovum), which shows empty tubes and small eggs which rule out pregnancy.
Hope this answers your question.