Dr. Helen Sandland

female

the lining of your uterus starts to break down and actually you may be bleeding a little, but not enought to make it to your pad.

You need your thyroid and prolactin checked.

two weeks after your period, you ovulate and sometimes there is a little drop in estrogen--just enough to make you bleed.

Periods can be bright red if bleding is heavy or fresh, and can be dark rusty colored if light, or just the last days.

As long as your periods are REGULAR, the color of blood is variable.   

Bladder area pain needs to have infection ruled out and possible interstitial cystitis needs to be checked.

The cervix has many small blood vessels and sometimes you can have bleeding from penetration during intercourse.

You have to be evaluated by a GYN to confirm you do not any lesions on the cervix, a cervical polyp, an infection, etc   

IF you have such severe pain that you literally near fainted and had trouble breathing--something is wrong.

Could you be pregnant--tubal pregnancy. A busted ovarian cyst is a possibility. You need to be checked out!   

Risk of blood clots are lowest for levonorgestrel and norgestimate, and highest for desogestrel and cyproterone- but risk for all pills very low--and MUCH lower than risk of blood clots or other complicatons of pregnancy.

First of all, a cryptic pregnancy means you don't know you are pregnant, so the question itself is a bit confusing--do you have more information? Your own body makes HCG when pregnancy occurs, but HCG injections are not used to help a baby grow in the uterus.