there is no way for a medical provider to blindly answer that question without an examination. i am sorry. i would suggest that you call your medical provider -- someone who knows you and your particular case -- for advise in this matter. anal fissures are tiny tears or cracks. they do not typically have "bubbles" so i would be concerned about a cyst or abscess forming.
i've a newly closed anal fistula. i can feel a bulge from the fluid; the pressure is very uncomfortable. is it healing? . it's drained for a couple years. now the bubble of fluid feels like i have a marble up my rear. i can push on the bubble and this forces the fluid back and it's comfortable for up to an hour but then the bubble fills back up. is this normal? is this just it finally healing?