Clomid or early pregnancy or af symptoms?

Vanessa • Been TTC for over 10 years. .no luck yet
Yesturday I almost went to the er because I had the worse cramps in my very lower abdomen? I finished my last pill of clomid 100mg on may 7th? My period isn't due to may 28th..anyone seen have bad cramps sore breast?? Could it be the clomid or pregnancy symptoms or early af symptoms? ?