I am 19 years old and am on the birth conrol patch. I had unprotected sex about 5 times before my last period which occurred on Feb 9th. Since then I have been experiencing cramping,abdominal stinging,blurred vision,diareah,nausea,fatigue,get nausea after eating,abdominal pressure,etc. I took off my patch last week incase i might be pregnant and now a week later i am experiencing what seems to be a normal period even though i just had one on the 10th. could i be pregnant or is there another explantion?