Delayed Period & Light Bleeding: Understanding Potential Causes

Question
hi,im a 23 year old mom of two boys. my last period was Jan 07 to Jan 15. also i haven't had my period since then, i did notice around feb 03 when i wiped myself i seen a light pink color. after then i took a hpt around march 09 that said negative i also took one again today that also said negative. on mar 12 and 13 of this month i notice the pink again when i wiped my self but no bleeding or signs of my period. in feb around the 07 when my period was suppose to appear i just felt little cramps off and on. then  on the right side i felt a little drop in my pelvic then i felt pain in my lower back left side. i am eating more and going to the restroom alot. i also feel little flutter movements at times but not so sure.and my belly button hole has opened up more i could feel the back of it when i put my finger inside which i couldn't do before. please help me understand this missed cycle.

Answer
From the history you give me, I do not think that this is pregnancy. Rather this looks like breakthrough bleeding which is seen in disturbed hormonal cycles. Also if you were pregnant, the HPT should have shown it by now. Therefore my advice to you is this, wait a week and then repeat the HPT. If you still do not have your periods, then get a USG done. It will be able to measure the size of the lining of the uterus and we will know weather you have ovulated or not. USG will also diagnose a pregnancy if there is one. If there is no pregnancy, they you may take a five day course of progesterone which should cause periods once you finish the course. Hopefully your cycles should regularize after this.