Which Opk looks positive..

Ok so here's my story. The top opk was taken on April 22nd but I had no symptoms of ovulating; no cramping no ewcm which I do normally have. On the 28th I began feeling light cramping on my right side and had a fair amount of ewcm so I figured I should maybe take another test and the bottom pic is the result I received. I started taking FertilAid last month and I've heard that it can sometimes throw off your cycles before straightening them out. PLEASE Advise!!