I'm 16 and my bf and I had sex with a condom. he came in me with a condom on so I'm not sure if there was any sperm that got in me... but ever since I've been feeling a little on the low side idk why though. Could I be pregnant?? Like I haven't been as hungry and I had the sex like 3-4 days ago. I don't want to be pregnant and I'm scared!!