UPDATE: My opks are still positive or showing 2 lines after 2 weeks!!

Lyn
So Ive posted a few times about my opks being positive or have 2 lines for two weeks maybe more..I've missed my period and I've done a pregnancy test and it's quite clearly negative, has anyone else had this? Is it something to worry about? I've been having period like cramps been feeling very sick and bloated very tired and had no appetite...can anyone give advice??