I just cummed myself! Help me!?

Ok so I just went to the bathroom a few minutes ago and I started to leak. I feel so worried that this happened, and it may have resulted from almost masturbating today. Please help me out, and tell me if this is supposed to happen, how long it will last, or anything because I am very worried that I have done this and this is only the 2nd time I have. I appreciate any help, so if you please, would you answer? DX