Could this be a sign of pregnancy?

Ok mii period came and went on march 24-29 or should i say 30th the make sure. I had on April 3,4,6, & 10th. I dont kno my exact day of ovulation but i said it to be the 7th. Ion know if i'm pregnant or not so i jus wanna get an idea. I've been crampin like mi period is bout to come but it doesnt come in another 2 weeks or so. Today i'm so sleepy and tired and i neva been this way b4. And yesterday i slept for 4 hours and woke up for about 20 min or so and went rite bac to sleep like i havent been sleep. This mornin i didnt wanna wake up an yesterday after i got through eatin i started to feel sick wen i layed dwn and usually wen i do tht its no problem. Help me Could I be pregnant. And i've also been havin a real slippery discharge. Is that a sign 2?