Oh no, so worried!

So I have been diagnosed with hypothyroidism since being pregnant.

Started out taking one pill of 25mgs for a month then ended up having to double the dosage so I was used to taking TWO 25mgs per day.. equaling 50 mgs

Well last time I got my prescription refilled, the perscription changed to taking ONE pill of 50mgs.. but I was not told about the change by my doctor OR by the pharmacist and didn't think to read the bottle because I thought everything was the same..

So instead of taking two 25s =50mgs I was taking two 50s = 100mgs... so I was talking double the amount I was supposed to... for a month and a half..

I feel so guilty for not reading the bottle and really worried about the amount of synthroid I was taking. I hope everything is alright, my doctor isn't in the office until Tuesday so it'll be a long weekend!! :(