What Causes Severe Bleeding During The Intercourse?

Hi Im fit and healthy no health problems etc. I'm a 22yr old female 9.5stone 5.4f. My boyfriends banjo snapped during intercourse (didn't realise for a bit) and this resulted in a large amount of blood in my vagina. There was a lot of it!! and i had to take about 3 showers. Boyfriend is fine, stopped bleeding etc.



After about ten miniutes i started to feel dissy and sick with stomach pains. Still dodgy now. Are there any effects of having a large amount of someones blood inside you?