Ahhh dear, that mild bloating and discomfort after intercourse is pretty common at 32 weeks, your uterus is so stretched already, any activity can make things feel a bit tight and uncomfortable, totally normal! The heartburn though is killing all of us in the third trimester, a few of us mums tried eating smaller meals, staying upright after eating, and propping pillows at night which helped a bit, but honestly, this is something worth checking with your doctor about, especially the tummy discomfort after intimacy, just to make sure everything's good with bub and the placenta. You're doing great, mama, these things pass once baby arrives!