very worried

Well no not really.
it depends on your age and if your body in matured by now.
but what I would do is wait and see the pains you have.
Anything weird look it up and see if it's normal or not.

welll the thing is iv already had a child his 4mnth old and i dont no how easy it is to fasll pregnant again coz i keep gettin told it is easy to fall pregnant again and im just worried coz im not ready to have to kids

hi noone14, relax okay?? Getting pregnant so soon after a period is possible, but not probable. In other words, i doubt it. In order to conceive you have to ovulate. Ovulation will happen roughly 14 days after the FIRST day of your LAST period.
I know your worried, but you have quite a wait before your next period is due.
In my opinion, i would say your not pregnant.
If your that worried you could always check into plan B, as you still have time.
I don't want to be the one who tells you not to look at plan B, stranger things have happened as we are all different.

bbfeet9 is correct. For some reason it is a little known fact that a woman ovulates 14 days after the start of her period. It's generally pretty hard to get pregnant (although not impossible) when you aren't ovulating. I know that it's tough to play the waiting game, but you do pretty much have to wait for your next period. If it doesn't "happen," buy a test.

Sorry if that's not much comfort.