guys don’t get it

My fiancé and I have been TTC for months. this month I thought I totally was. I was spotting, which I thought was implantation bleeding then out of nowhere today blood started pouring out. I never spot before my period so that sucks didn’t see that one coming. it came 8 days early. I always had such regular periods comes on the dot every month. we stayed drinking Premama drinks so I think that’s what changed it, which sucks because we get married June 1st and if I don’t become pregnant by then I will get my period ON MY WEDDING DAY. since my period decided to change it’s going to be more complicated this month to find out when I ovulate. my fiancé doesn’t get why I’m so emotional today about it. I don’t know what to do, I may be overreacting, but thinking your pregnant then having such a hurtful heavy period makes me hurt haha. am I overreacting or does anyone relate to me?