Preggy symptoms?

Can you be preggy even if you had a heavy late period that lasted 6 days? So I had my (two weeks late) period on 11 April-16 April. But I've been realising I've been getting a tummy. My lower abdomen seems to be bigger. And feels kinda hard... And its protruding... Never experienced it before. But can this just be because of stress, drinking alcohol or eating Maccas large at night or sleeping late at night (since I work the night shift at maccas?) So concerned because my tummy is bloating (the lower abdomen) :/ lmao

P. S. And I've been peeing tiny amounts but not peeing frequently. And nowadays I feel like puking but im not. AND all condom sex.