Cramping but got a positive test

Rene
I got a positive test three days ago but I'm cramping all day.has anyone had this with a positive test and was actually pregnant? I know implantion cramps are normal but what about after that? This app says I'm just about to hit the 4 week mark and I'm a little nervous and feeling kinda down because im afraid it was a false positive and my period will come. I will test again tonight and will be going to the drs for another test. I just wanted to hear from other women who may have experienced the same thing. Tia! :)