Thyroid

I’m 29+2 and I have Hypothyroidism. It’s not out of control, before conceiving it was only off like a point or two. I got prescribed 25mg which is the lowest dose I think and have been on it since before I got pregnant . My doctor said that it’s extremely common to have your medication upped to a higher milligram during the 3rd trimester. Well today, he upped mine for 25 to 50mg.

I have a brand new bottle of 50mg and two 25mg pills left. Should I just take my last two 25mg together tomorrow to make 50 or just throw the 25s out and take the 50?