I had my period last month, but I'm 13 days late for my current one.The day before I was supposed to have my period... I had sex, but he has never came inside of me and I've had cramping and discharge, but no bleeding. And no pregnancy symptoms, please tell me this is something other than pregnancy?

Just because he "never came inside" doesn't mean you can't be pregnant.
"please tell me this is something other than pregnancy?" May be a little late for that.

You would not be having pregnancy symptoms this early, and we can't tell you if you are or not, or what it could be. Anytime you have unprotected sex there is a good possibility because you know that there could be leakage, and then pre-ejaculate is just as potent.

Might be time for a pregnancy test. How regular are you periods?

I took four today and they were all negative, and my periods are very irregular.

I took four today and they were all negative, and my periods are very irregular.

If that is the fact how do you know you're 13 days late? This could just be a wonky period for the month. How has your health been? Illnesses? Flu? Stress? There are a lot of things that can delay a period especially if they're already irregular.

I agree with Craven, but have to spread the rep.

If your periods are irregular how do you know you're 13 days late?

Wait for your next scheduled period, or 2 weeks, then test again using first morning urine.

You had sex, so yes, you could be pregnant. Doesn't matter if he didn't ejaculate inside of you, there's more than enough sperm in pre to get the job done. Any time you have sex, even with protection, or more than 2 forms of protection, pregnancy is possible. The only form of birth control that's 100% is abstinence. Sounds like you had unprotected sex, which means pregnancy is very likely.

But we can't tell you if you're pregnant anymore than we can diagnose what this is if it isn't pregnancy. You'll have to wait and see, or see a doctor if you're concerned.

Good luck.