Prego or not

So for the past 4 weeks I have slowly been having mild cramps, tired feeling in stomach muscles, mild back aches, tiredness, sore breasts, Nausea with certain things I eat, peeing more so, bloating, and indigestion. I don't know if it's cause I'm pregnant or not because I'm not supposed to start my cycle until the 11th this month. And I'm scared sue to recently have a miscarriage to twins June 1st this year.