Clomid and ovulating

Meghan
I just finished my first cycle of Clomid (50mg days 5-9). The doctor called me today after my blood work I had done yesterday and said I did ovulate. Now it's just a waiting game. AF Saturday. 
Is it common to ovulate and to not get pregnant? 
I took a clear blue digital test this morning but it was Negative. I hope I just took it to early.