Welcome to HCM,
As you had menstrual period two weeks after first sex, chances of pregnancy
due to first sex are not present. 2nd time you had sex only two days ago, which may or may not result in pregnancy. You are probably suffering with U.T.I. with/without Vaginitis
. It requires examination and investigations like routine examination of urine, culture & sensitivity of urine & vaginal swab, and tests to exclude S.T.D. You are advised to consult a Gynaecologist in person.
Wish you good health,