No Symptoms Pregnancy

My mom told me when she was pregnant she never had symptoms and had her period still. She didnt find out she was pregnant until three months in. Just wondering if this could be a possibility for me. My co worker asked if i was pregnant the day i got my period..i was bloated of course but my period was lighter than it usually is and I currently have no symptoms. I get nauseated easily by coughing or sneezing or seeing something gross but I think it might just be stress. Opinions please! Have any of you experienced a pregnancy without early symptoms?