I have psoriasis on Vagina and Anal line. If anal line is irritated by paper or smth, I notice little blood on paper+it itches. Can psoriasis bleed?

Need to examine. It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. The short answer to your question is yes, consult a gynecologist for proper evaluation.
Have a healthy diet, exercise 30 minutes/day, drink plenty of water, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/.
Get HPV vaccine.