DO NOT BUY THIS OPK BRAND

Ladies. This is my first month using opk, and I purchased this brand from eBay. I’ve been testing since AF finished. Until CD15, Most of the time I have only the control line, no test line. I feel strange, so I purchased opk from first response just want to see the result from a different brand. Today is my CD16. Test from cheapie brand only shows control line. Test from FR shows almost positive/ positive. Now I worried maybe I had O’d already as my temperature raised 0.4 degree this morning.