Hey hun, whatever you decide its got to be best for you and bub. Lactose overload does calm down within a short time. The result you are having with formula may be temporary as he is adjusting to the new diet, the formula is harder to digest and will feel heavier and he may go back to waking and feeding regularly.

He would have done those poo's after the bf because bm has a natural laxative in them. I have no answer for the pain though, was it during the feed? Maybe he was frustrated at it? When you say diarrhea what do you mean?

If you do decide to switch to formula, just be careful he doesn't get constipated. Also make sure you slowly ween, otherwise you may get mastitis.