Constipation= Pregnant???

So here's the deal. I went off of birth control in March. On birth control I had severe constipation and had to eat a ton of fiber just for a little relief. It was like that for about 3 years. The week I went off of birth control I was instantly better! Havnt had to eat extra fiber and felt great! This is our first month TTC and I have 1 1/2 weeks left until my period is supposed to start. For the last week I have all of a sudden been having severe bloating and constipation and cramping just like when I was on birth control. Could this mean I'm pregnant? And is it too soon to take a test? My period is supposed to start on the 27th.