Am i pregnant? Or is it just side effects?

I have been taking Metformin 500mg 3x/day and Clomiphene Citrate 50mg for five days. I just started the medication during this month, June 5.I was never diagnosed with PCOS. However, when I am stressed i'll miss my period and i've been having troubles getting pregnant for over two years. I recieved my period or what I think was my period on the 11th of June. it usually come on the 13th. I had cramps, although not painful like they usually are. But, my period was strange. Brown discharge came down instead of red blood and i am usually VERY heavy. It was light and Brown for close to three days. then some blood came down for about 1 day and a half and then it stopped. Even after I finished my "period", I still had cramping. I get really tired and want sweets more than ever. I have an increase sexual drive. i get queezy from time to time off and on. Mostly when i'm hungry or after i finished eating. I get unbelievable heartburn. I am also bloated. Are all these symptoms of side effects or early pregnancy?