BO problems.

So I have always been very sweaty in my arm pits, but not to smelly as long as I used any deodorant every day. But this pregnancy my bo is terrible! I have to use the clinical strength stuff and it still doesn't last the whole day, maybe 12 hours if I'm lucky. I'm not really sure what to do about it other than wash and reapply a couple times a day. Anyone else have that gong on? Any tips?