Am I pregnant??

If the condom stayed on properly, the chance of you being pregnant is slim. You can take a pregnancy test to rule it out, but you need to know when your period is due. You can't test earlier than that. If your cycle isn't regular, test about 18 to 19 days after you had sex. Sperm stays viable for about 3 days, and on average, you get your period 14 days after ovulation; the extra days are there to make sure you don't test too early. Also keep in mind that there are many other reasons for your symptoms—you might have a little flu, or you might have eaten something that didn't agree with you. There are 1001 causes for headaches, most of which are harmless. Your discharge can always be a bit different; if it smells really bad or turns greenish or grayish, then go to your doctor. There might be a yeast infection brewing, which is easy to treat. And finally, stress can also knock you out pretty hard. If you're really doubting and want to talk to someone who can give you a clear answer, go to your doctor. They can help you further, and that's what they're there for.