Early sign of pregnancy?!

So every month I get a bathroom visit which is diarreah and then I get my period a couple hours later. It's my sign that I know I'm out period is starting. It is only for that one day/ morning. This month is my second month on clomid. Last month was normal but this month I had my bathroom visit 4 days early?! I took a test this morning with 2mu and only bc I had my morning cup of coffee. I'm not sure if this is a good sign. I've never heard of diarreah being a positive sign for pregnancy... I feel like AF coming 4 days early is crazy...