Relapse, steroids and late periods- one for the ladies!

Hello I just wondered if anyone had had experience of a relapse and/or oral steroids (5 days) effecting their menstrual cycle? My husband and I are try to concieve and unfortunately I had a bad relapse this month :frowning: I had a course of steroids but now 3 weeks later my period is 3 days late. I’m wondering if its the relapse messing things up (pregnancy tests are neg) Thank you xxx