Bfn 11dpo - femara and ovidrel

So last Thursday I had a progesterone test and it came back at 15.1 so confirmed ovulation. Nurse told me to take a test exactly a week from that day. So I took a test first thing this morning and negative. I am on cycle day 27 and according to my chart 11dpo. Any chance it might just be too early? Temps are still high. Been really tired and some nausea. Had cramping for a little bit yesterday but nothing today. My cycles are usually average 32 days long...but I have not ovulated previous cycles under clomid, but I did ovulate this cycle (first cycle with femara and ovidrel shot)