welcome to health care magic
what you had is premenstrual spotting. this is a sign of slight hormonal imbalance. also it could be early pregnancy
, in my opinion you should get a serum beta hcg
titre blood test
done along with a sonography
. a sonography will tell you if there is any local cause of this premenstrual spotting,like a small polyp. the serum beta hcg will rule out pregnancy.