Conflicting doctors opinions?

Ive been on Levotyroxin for about a year or so and wellbutrin for a month or so but my primary care doctor put me on a blood pressure medicine (I forgot the name of) and now my prescriber for wellbutrin is concerned and told me to ask about the combination. Well I did and my primary care doctor has no concerns. Part of me thinks he should be if my other doctor does? So now I think i should consider getting a new primary physician and if so how do I got about doing that within the same clinic without it being awkward? Im honestly barely an adult and most of that is do to anxiety.