Std test Anxiety

So recently I tested positive for Chlyamidia and have been asked to do a blood test to test for any other stds and I haven't gotten it done yet because im so terrified I have something way worse like HIV. I have a boyfriend currently and unfortunately had given him Chlyamidia aswell he was hurt at first but very understanding and forgiving but I don't know if he could forgive me if i had given him something more serious... I can't sleep not knowing but i can't bring myself to find out incase of the worst