Strong smelling wee?

Christine 💍 06.06.13 👰 02.01.18 👶🏼 06.01.19

For the last day or so my wee smells just like strong ammonia but when I go to the toilet it is very clear as I drink so much water about 4-6 litres a day as my only craving through my pregnancy has been cold water. My midwife has checked for diabetes which I’m clear on and there are no protein levels Or bacteria in my pee (I was checked 2 days ago). I have about 3 cups of tea a day and don’t eat any strong smelling foods such as asparagus, garlic, onions ect. I’m very health conscious. I haven’t had sex since conception as OH thinks he is so blessed he will hurt the baby 😂 so I’m stumped. I have been getting period cramps and a temperamental tummy the last week but I’m 36 weeks pregnant on Monday so just assume this is the glamorous part of pregnancy. Just wondered if anyone has had this?