Hi, Thanks for the query. During pregnancy blood supply increases to local genital organs. But just by increased pigmentation and sensitivity we can not come to one conclusion regarding pregnancy. Early pregnancy symptoms may mimic symptoms of premenstrual phase. If you had unprotected intercourse around the time of ovulation, there is possibility of pregnancy. The possibility of pregnancy can be diagnosed around the period of expected date of periods. So better to wait till expected date of periods. If you miss periods, go for pregnancy test. Start taking folic acid prophylaxis from nowonwads. Take care.