Do steroids affect menstruation?

Good morning. For a month and a half, I took encorton for thyroiditis. Thyroid hormones were all normal, and both the only symptoms were terrible pain and inflammatory nodules. I took a month of encorton dose of 20 mg, and for half a month gradual reduction. During the reception, I was given a period after the 23rd day earlier( my cycle is 26). Two days ago I took the last dose of the drug 5 mg, and today again the period, this time after 18 days. Could it be through this drug? I'm nervous because I've never had irregular periods