You're probably right that the symptoms are not being caused by the Novarel. On the other hand, if you're taking progesterone in any form, it can give you pregnancy-like symptoms.
Usually by 14 days after ovulation, you would have a positive pregnancy tests if you're pregnant - and from what you've written, it seems that that amount of time has passed. If you still haven't gotten your period, retest. If your test is still negative, call your doctor to see what s/he recommends.
Good luck!!!
Rachel Inbar
www.FertilityStories.com