Period problems.

Holly
I had a misscariage 04/23/14 
​Got my period 05/23/14-05/26/14 
​Didn't get it in June, 
​Then 07/03/14 - 07/03/14 I had very light pink spotting 
​I went for an U/S and BW on 07/11/14 and their wasn't anything, along with no height in my BHCG. 
​I was supposed to get my period 07/18/14... If I go by my last period being May 23/14 But now I'm late! 
​Anyone have any suggestions?