Ok lovey i'm afraid the only way you're really going to get a definite answer on this one is to do a test. I know you say you are scared to but it's better to bite the bullet and test rather than sit around worrying about it. The fact you're getting periods suggests you're
not pregnant but some women do still get periods when they are pregnant.
Do a test. You need to decide what to do if you are pregnant and the longer you leave it the harder that decision gets because your baby is getting bigger and bigger.
If you're not pregnant then please go to your doctor and sort out some contraception so you won't have this happen again. Really, a condom is not that hard to put on and it protects you against nasties as well as pregnancy. But i'm sure you know all this.
I'm not saying this to be horrible but if you are having sex you really need to grow up a bit and take proper precautions. There is nothing wrong with sleeping with all the men in .England if that is what you want to do but please please please protect yourself!!!!!