bloating, sore nipples, increased urine frequency are few early signs of pregnancy
. Blood hcg test is more reliable test for detecting pregnancy
compared to urine pregnancy
test. You may take up blood HCG test. Other causes of these symptoms are hormonal imbalances, PCOD, hyperprolactinemia,STIs, RTIs etc.You will need tests like pelvic scan, hormonal assay and other tests depending on the clinical examination findings. Consult a gynecologist for more queries and assistance.