It depends if you know when you will be tested or if you will be tested randomly.

If you know when you will be tested try the dillution sticky on this forum.

If you will be randomly tested synthetic urine may still work for you even though you are pregnant. Most tests just test for what they are looking for and just need to be the correct temp and color.

My wife had nausea when pregnant and the mildest thing she could take for the nausea was a joint. All our kids turned out fine too. No judgements here we all get by however we need.