4 days late.. is it possible for Prego symptoms?

So I usually start my period within 30-32 day of my cycle, today is Day 36 still nothing. Maybe I'm just being weird but i have been paying attention to my appetite which seems to be up and down this week. I was hungrier during lunch time earlier this week which is not my usual. Today I made a huge chicken alfredo bake, didn't eat it when it finished. But we left to run errands and on the way home I'm eating a sausage biscuit from mcdonalds. Lol. My legs felt heavy and tired today, I feel a little more gassy, and my abdomen feels weird twitches at times. It's like I gain energy and then lose it out of nowhere. And all over again. I don't wanna get my hopes too high because I know it could be period symptoms but at the same time I have that weird gut instinct that my body is acting really different and I could be. My 3 year old has also been eating a lot which is not normal!! Anyone experience Prego symptoms that early?