Someone Help me Please

This new year has been a roller coaster for me, mentally and physically. But the past 3 weeks have really gotten to me. I can't seem to get enough sleep. I catch myself crying at everything. I'm always hungry, yet nothing sounds good at all. I get random twinges in my lower stomach. I also get really sharp pains in my boobs which I've never had not even when I was pregnant with my first. When should I test? My period is supposed to start tomorrow. I have a strong feeling I'm pregnant again only because I've have way more symptoms these past 3 weeks then I did in my whole first pregnancy.advice is appreciated