Who else is insulin resistant??

Price • Together for over 13 years, married 6 years. After 3yrs ttc w/PCOS we finally have our son! now without trying we r pregnant with baby #2
Anyone have insulin resistance? I have managed it with diet but now I'm 8weeks pregnant and nothing I want is stuff I can have! Tonight I went a little off my diet and I'm afraid of my insulin getting out of whack and hurt the baby..... tonight was our 4th wedding anniversary and I had some onion petals and half of like it size of cold stone ice cream(skinny vanilla no sugar added) and I feel super guilty... Anyone else dealing with this?