6 days late. No symptoms though.?

The only common symptom that you have for pregnancy is the missed period. I have never heard of leg cramps as being a sign of pregnancy. I know you get leg cramps later in your pregnancy. Since you has unprotected , you could be pregnant. Take another test. Take it in the morning when your HCG levels are the highest. Also, if you want to you can take a blood test to ensure you really are pregnant. Just remember this could all be in your brain. The brain is a powerful tool and sometimes it makes you feel things even if you are/aren't pregnant. Good Luck!