Anyone on birth control Mercilon?

i just want to know why after intercourse, a few days after i grasp like this big blob of cervical mucus that comes out. ITS HUGE!! is that from the birthcontrol? is it approaching a barrier that stops the sperm from going into the uterus? is it not dangerous to have sex after this have come out?
Answers:

Can anyone have STD even though nearby was no sex?

The hormones also increase the mass of the natural mucus at the d??colletage of the womb, which makes it more difficult for sperm to cross from the vagina into the womb and realize an egg. They also change the characteristic of the womb lining (endometrium), making it smaller number likely that a fertilised egg can entrench there.
http://www.netdoctor.co.uk/medicines/100...
This is something you ought to read
http://news.bbc.co.uk/1/hi/health/184869...

and more
http://www.inhousepharmacy.co.uk/bcp-hor...
http://www.verdicts.co.uk/womens_interes...

and nearby is more.

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