According to glow my period was supposed to start about a week ago, but.. My periods are usually wonky and arrive at different times most of the time. So there's never an accurate start day. The last couple of days I've been experiencing stomach cramps, indegestion, constipation. I've even been waking up in the middle of the night from nausea and I've been throwing up. I don't know if this would be early pregnancy signs or if I'm just sick. Is it too early to take a pregnancy test??