Having sex while on your period

Jasmine • I`m jasmine I`m 21 yrs old and single and enjoying life I`m happy funny and just a awesome girl!!!
Ok so me and my boyfriend had sex and we had to much to drink and then we did our thing but any way ok when we were having sex I started bleeding and my bf is like are you on your period? I'm like yes and I had bled so much and he kinda got mad but idk what to do did I do a good thing by having sex while on my period or was it the wrong decision? I need help idk what to do??