What not to eat when pregnant

Pregnant or stressin?

Ok, my period usually comes on thursday when that time rolls around. I got off my b-control pills about 6 months ago, so i know its not from that. It is monday and i was expecting my period on thurs or at least fri. Last month it didn’t come until sunday. This time…well im still waitin. I mean either way I would be estatic. But I am sorta spotting, I usually have really bad cramps and stuff but I have nothing at all. I feel a little tired and don’t have too much of an appetite, and can’t stand the smell of certain things. Like today I tried to eat some shrimp alfrdo, but I couldnt stand the smell to even eat it. Does anyone know what is going on? Idk if I am pregnant or just stressing out? Help please…serious answers too…I mean I just need to know if anyone has experienced this before. Thanks in advance for your help.