So confused

So about 6-7 dpo I had some cramping pretty bad at times only lasted 2 days max af was supposed to start the 19th day before yesterday had a lot of ewcm I thought that only happened when you o'd I know I o'd when I did cause opks an temp last week my opks were positive again? I've taken 3 hpt and nothing!? My boobs are sore and very sensitive. I normally can tell when af is on her way but my body jut feels different has anyone had this happen before. Like i said around the time af comes I don't get a lot of symptoms I can just feel like it's almost there thanks!