Kinda scared , need advice

So me and my boyfriend had sex and didn't use a condom nor birth control. It's been about a week since and the day after I bled for about 3-4 days but that's about it and then stopped bleeding. I had cramps and bloating. Also the week before we did that and used the emergency contraceptive. I'm not sure if I'm pregnant or what's really going on. 
Any ideas? :/