CD 34 and No AF!

Heather • Husband and I are ttc baby #1.
My current cycle began on July 9th. I started my first round of Clomid 50mg on days 5-9 (July 13-17). I received a positive OPK on CD 18 (July 26) and had a 21 day progesterone test to confirm ovulation. My level was 16.4. My cycles are only 26-28 days long and always come like clockwork. I understand since I ovulated later, that pushed my period back as well. Today I am dpo 15. I was suppose to start yesterday and I never did. I have had back cramps, cramps around my left ovary, and bloating for a several days now. My breast have hurt on occasion but nothing major. I took an hpt on dpo 11 and dpo 12 and both were negative! What on earth is going on with me? Can anyone help or give some input!