tubal pregnancy .

So may of 2016 I had a etpic pregnancy and had to have my left tube taken out . I was so shocked cause I was on the pill and wasn't trying to get pregnant . It took a toll on me though I have 2 boys 7&4 and every month right before my period I start freaking out thinking I am pregnant again ... I am 1 day late on my period and I am freaking but it's normal for my period to be a few days late here and there but ever since going threw the etpic I overly stress.  Has anyone every been threw a etpic pregnancy ?!?