Shorter and a little lighter period negative hpt (expired last month) hormones or possibly pregnant. i'm 25 with 4 kids no bc anything will help pleas?

Birth control: I suggest ongoing birth control and a GYN evaluation. Unless you intend to never have sexual intercourse again ( doubtful ) You will need BC or a tubal ligation if you do not desire pregnancy. Your sexual partner can also get a vasectomy. If not on pills now: double protect; condoms and spermicidal gel, foam or vaginal suppository