Late period, negative test!

Chelsey • 2 years of Trying for our 1st Baby, now working with fertility DR. In the midst of the storm,God will be your Sunshine!
I did 4 months of clomid and novarel and it failed because my body rejected it. The first period after my last month of clomid came on time, even a few days ahead of time actually. Now, 2 months off of it I am 8 days late and having no cramping and no breast pain which is how I know it's coming every month because it's so bad! Has anyone else had messed up periods since getting off clomid?
Not starting my period is making me crazy! Took the pregnancy test 3 nights ago and it was negative. Me and husband are still trying on our own just incase while I try to lose weight for next medication.!