I'm 16 and I had sex for the first time towards the end of January and he did not have a condom on. I'm on a "low dosage" birth control and I did not let him do it for more than 10-20 sec because he did not have a condom. He did not ejaculate inside me and I've gotten a normal period in February and a really light one this month. I can't take a test and I think I'm just stressing a lot so I need some answers... 1. Could I be pregnant from pre-ejaculate... 2. Why was my period so light this month... 3. What are some symptoms that I should have by now because I don't think I've had any (which is great) but I keep scaring myself if I think I've had some... 4. Should I continue to worry?