someone used my toothbrush...

I have 2 roommates. I got up 10a.m and brush my teeth, then I found out the toothpaste I spit out was orange,which means open wounds caused by brushing were in my mouth. My roommie got up 4hours earlier than me and went out for class. I don't know  their status.

What if  they mistakenly used MY brush and also came out blood, then I used my brush 4hours later without notice?

is this a risk ?

[Viky818]

There is no risk.

HIV can only be transmitted by;

1. Unprotected penetrative anal or vaginal intercourse
2. Sharing works with IV drug abusers
3. Mother to child

[grenade]

thank you for your reply