5 day pouch diet if you might be pregnant

So hi...  My husband and I have been trying for only about a month, and I was well aware that the process of getting pregnant could take a while.  This is my first month off the pill in 10 years, so I understand my period is gonna be all messed up.  But I know I'm eating like crap, and I know I need to get back on track.  So is it terrible to do the 5 day pouch diet if I MIGHT be pregnant?  I took a test last week, but it said negative, and now i'm over 2 weeks late.  Took another test this morninng, negative again...  I was barely spotting towards the end of last week, but then nothing.  So I don't know whats going on... another week without my period I'll be seeing my doctor.  But I just needed something to get back on track, and wondered if it was terrible to go on the pouch diet if I was pregnant?  Thanks for any advice!!!!   

At this point, if you are super early pregnant,  nutrition isn't as important as vitamins (folic acid, especially).
However the 5DPT usually puts your body in ketosis and that can cause issues with the baby, but usually not until later (brain developement) and you'd know by then you were pregnant.

You definitely do NOT want your body to go into ketosis if you might be pregnant...