Hi,i Am Alex. HIV Positive （already Take Medicine Over 1

hi,i am Alex. HIV positive （already take medicine over 1 year) i have a question. if someone bite my lips, i feel hurt so at first time push her away. then i use my finger to touch my lip and find a little bit blood and wound. i worry about my blood into her mouth. i find she doesn't have oral ulcer. but i worry about if she gingival bleeding or something that can,t use eyes to observe wound.