I took Femara this cycle beginng on cd 3 through cd 7. On cd 13 I went to Docs for an US I had 2 follicles, she said my uterine lining was good and thick but she wanted me to wait to take the hcg injection on cd 14. So thats what I did. I also used OPK and on the cd 15 it showed an LH surge. (? will and hcg injection cause false OPK?) Another question I should have ovulated by cd 16. Does anyone know if you cramp after ovulation like your gonna get your period? I am cramping and my breast are tender. Any information would be great...