No, probably not. If all you saw was a speck, it's probably fine.
I'd talk to your bf though and ask him to be a bit gentler from now on. :)
Well, I mostly agree with/ auntiejessi, but sexually transmitted diseases can be spread if there’s blood - including AIDS !! Not to alarm you - it Prbly IS OK, but 1st, do you know if the blood came from YOU, due to irritation of your throat from his deep thrusting, or maybe from bleeding gums, or was this possibly HIS blood? I’d be a little more worried if it were his.
Maybe you should just get checked out for possible STDs just in case. I know I’d have trouble sleeping if I were worried about smthg like that! So just to ease your mind - and to be absolutely sure - I’d see a Dr. & get checked. Your BF may want to as well...