HELP I think I might be pregnant

Okay so me and my boyfriend have unprotected sex often, he is really good at pull out but I know there are chances of pre cum and other things going wrong. Anyway so he came in me and I missed my period I thought it would come a little later so I just didn’t make a big deal about it and we had sex... he pulled out and there was blood all over his penis!!!!!!!!!!!! He was basically mortified but he got over it quickly. So I went thru the week thinking that this was my period the bleeding was so light and most days I would just have brown discharge.. I explained to him that this isn’t what my periods are normally like and we took a pregnancy test it was negative. So he was super bummed out about me not being pregnant but I didn’t really mind honestly... but we had sex again like all throughout that week and he came in me every time.... so like 9 times. So then one week later we take another pregnancy test and it is still negative.. but I know that you are supposed to wait until after a missed period but I feel like it has been long enough.

EDIT : My boyfriend is dying for a baby and I’m okay if I’m not pregnant and I’m okay if I am. I wouldn’t be bummed out about either scenario. I just want to know what you guys think the chances are and like if it’s possible I am