Accutane and anal bleeding?

Hello, Im on 60 mg/day Claravis for 3.5 months now and I'm a 22 year old female. I've had problems with constipation for about one month now and when I wipe a little bit of faint light pink blood is on the tissue. I assume that Im just so dry that my anus is dry too, and cracking is what is causing it. (My lips are very dry) should I be worried about any more serious, possible rectal side effects? Or is it normal for light anus bleeding after poop? Also about relevance of constipation. Thanks!