Eh, tinnitus ke yang tu? Mmg annoying gila when you're heavily pregnant and everything terasa amplified kan. A few of my mum friends had similar ear ringing during pregnancy, some said it went away after delivery, but better you check with your doctor lagi if the eardrop didn't help, just to make sure nothing else going on, especially since you're sudah 37 weeks and stress pun boleh trigger these things. Hopefully it's just hormonal changes, tapi don't tough it out lah if it's affecting your sleep or making you uncomfortable, your OB or ENT specialist boleh check properly.