My OTR microwave instructions were 30 min clearance between the bottom of the cabinet and the top of the cooktop. I have 32 total, so my microwave is about 16 over the gas cooktop. It passed the code inspections at that height.
There are some ways to get baby's attention, but if fetal movement isn't felt enough, call the doctor. The gentle rocking of mom's everyday movement most often lulls the baby to sleep, hence baby sleeps all day and wakes up when things get calm at night. To alert baby, simply lie down for an hour or two and chances are she'll wake up and move around. While you are reclining, change your position occasionally, between lying on your back to lying on your side, for example.
You will probably feel your baby move for the first time when you're around 17 or 18 weeks pregnant. Most first-time mums notice the first movements when they are between 18 and 20 weeks pregnant. At first, you feel a fluttering or bubbling, or a very slight shifting movement, maybe a bit like indigestion.