Okay so clearly I don't know what's going on and am tired of looking on the internet and I need help…

Okay so clearly I don't know what's going on and am tired of looking on the internet and I need help and someone to answer if they had this problem or know someone that has but I am usually every 30 days I start my period some months every 28 days and today I was supposed to start my period and didn't and if I am 28 days this month I would have had it on the 19th of this month and AF didn't come yet not to mention last night around 1:30 I had light pink while wiping today I bought a pregnancy test and I peed on it just one that is 88 cents at Wal Mart while I peed on it it was reading and the T showed up a line and then went to the C and showed another line after it finished the T line disappeared just so confused right now no period but tones of yellowish whitish discharge I need help.