What Causes Delay In Periods, Increasing Appetite, Vomiting Sensation And Hard Nipples?

Hi, may I answer your health queries right now ? Please type your query here...so ive been lookin for this answer i get a bunch of dif ones ive had diarrhea for like probly 2weeks n idk if i could be pregnant yesterday i noticed that my nipples were unuaslly dark but today they are normal idk wat is goin on i also been rly hungry but when i eat im suddenly full n some mornins i wake up starvin like i havent eatin for weeks n some i wake up full as can be ive thought iwas pregnant before but it was my head playin games i have very unregular periods so i cant go by those n idk if i want to take a test im rly scared this time but i dont throw up i do gag more frequently when i brush my tongue n things but i didnt start noticin these things until my boyfriend said i looked pregnant in a pic n a couple girls at work said the same thing n i also been waaayyy more irratable than usual