Af date 4/15 brwn discharge/spots 4/17 & 19. 2 neg tests. never got regular period. i've always had regular. could i b pregnant?

Maybe, maybe not...: Pregnancy is the most common cause of a missed period. If not pregnant, other causes of a late or missed period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (especially birth control pills), hormonal disorders, etc… a visit to one’s ob-gyn doctor is a good idea if symptoms are persistent, recurring, or worrisome.