How can you tell the difference between ...

amanda
How can you tell the difference between a period coming or your pregnant... I had a miscarriage last summer but like when i thought i was pregnant my body pretty much knew because I took the test before my missed peirod and it was positive.. and now I'm feeling the same way but I do have slight cramps here and there but nothing like how it would be a couple days before my period, could this be because I'm pregnant or I just need to wait for my period.