Wondering if I’m pregnant or just adjusting to supplements

Been taking a desiccated thyroid supplement for a month but i felt it was a little too much for me so i switched to T-150. Been on it for about a week. I just got blood work done and my thyroid levels are in a good range. I had my period a week early on the bovine supplements and now I’m 2 days late taking the t-150. But we also had an oops close to my ovulating time so I’m wondering if it’s the supplement or I’m actually pregnant.