Could i be pregnant again!?

I missed my period last month. I took 2 test and both negative. I'm showing tons of signs tho. Sore nipples, hot flashes, fautigue,mood swings, lite cramping. I just had a bby in November n was thinking it was cuz my body was healing. But right when I had my son my periods were back to normal. Then all of a sudden my period stops. I'm not sure if I should wait it out and see what hapens n a couple weeks or just be smart and go to the doctor. Has any of you ladies had the same thing happen and turn out pregnant.? No smart remarks please. Just want to hear some stories.