Period 4 days late...

Kieanna

Im 18, i got the nexplanon out in February for the first two months my cycle was 28 days then last month my period was 1 day late and this month it is four days late, im having cramps, not bad cramps just noticeable cramps, i am also having white thick discharge sorry for the tmi.. i have took 2 cheap pregnancy test both came back negative and i cant afford clear blue.. am I pregnant?