Misty -
congrats on the BAHA. I hope you love it as much as I love mine
As for your post op questions, everyone is somewhat unique.
I didn't have pressure in my ear, but I did have soreness (and major numbness) for quite a while post op. Wish I could tell you how long "quite a while" was, but I can't recall. To this day (I'm almost 4 years post op) I still have some numbness but nothing compared to the early months.
My taste buds were all screwed up post op. At first they didn't seem to work - I couldn't taste anything and had no appetite whatsoever - then I got over that and experienced "metallic mouth" where everything just tasted strange. Over time that went away and things got back to normal. I'm thinking it probably took at least 6 months for me to reach that point. Someone told me to try zinc - which I did. I'm not sure if it helped or not, but it definitely didn't hurt.
I didn't experience any damage to my tongue so I can't help you with that; sorry.
Five months post op is still fairly early in the recovery process. I found that it took about 12 months to get completely back to "normal".
Hang in there,
Jan