Am I pregnant or is this menstrual symptoms?

I already have a child he about to be one in like 5 days. My period came on the 22 in April and today I don't see any spotting or nothing. Anyway, before i qo to sleep I'm naseous and when i wake up I'm naseous also. If i lay on my back i can barely breathe and if i move around just a little bit i get tired or short of breath and i qet headaches from time to time. I don't know if this a new baby growing or is this just menstrual symptoms. Help Me Please !