Anyone have a clue.?

Kate
For 3 days I was constpiated with a lot of gas and cramps. Then starting yesterday and today I get bad period cramps and then about 20 mins later have to poo really bad. I'm 2 days late. And have period cramps knots all day but they are light and not bad. Anyone else have anything similar with any pregnancy? Testing tomorrow morning or the day after. Please help no bleeding or spotting either