So, on December 26th I was just fingered by my boyfriend and he masturbated right next to me and cummed in my hand then I had felt myself down there with cum in my hand and rubbed it all around. But the very next day I got my period and it is very heavy but I figured it was already coming and now I won't be able to see the implantation bleeding! I heard that all the semen needs is a warm and wet environment (which I was wet at that time).. Also i was laying on my back it could have seeped into me?