Changed my cycle days, 4 days late now

Hi everyone! I took clomid for 3 unsuccessful cycles, (3-7) this time around my doctor didn't send my prescription and I had to wait a day, making it cycle day 4, I decided to go ahead and just do (5-9) to see if maybe it'd work. I had a blood drawn scheduled, I didn't make it after the holidays, I ovulated around Christmas eve&day, I didn't take tests or anything 🤦🏻‍♀️ so I'm not sure when I ovulated for sure. Now I'm 4 days late, I haven't tested I'm scared, did changing days ever work for anyone else??🤞🏻💕