Confused!

So according to certain apps in 3 days late and another I'm 1 day late. I usually have my period every 26 days last month it came 3 days early. This month I measured it back to the 26 day cycle and my LMP was 30/4 so that makes me due the 25th on a 26 day cycle and the 22nd on a 23 day cycle today is the 27th and im experiencing cramping and (TMI) white thick discharge with stripes of yellow in it. I know! Gross!. All I'm wondering is if anyone is in the same boat as me. I don't really wanna think pregnancy becaue I always think I can't becaue of how long we've tried before it becoming so stressful on our relationship. But now this?! It's even more frustrating.