Telling my midwife I am no longer breastfeeding

So when I was pregnant my midwife asked how I planned to feed my baby and I expressed some anxiety about breastfeeding. She reacted really harshly and kind of scared me into it by telling me that if I don't breastfeed my baby is more likely to get sids and other things like that. Well, when he was born I tried breastfeeding and did it for the past 5 weeks. The last 3 weeks have been MISERABLE and both me and my child are unhappy and uncomfortable during feedings. I have also tried pumping and bottle feeding but my supply decreased so much I was scared I wasn't going to produce enough. I deal with generalized anxiety disorder and I found breastfeeding very overwhelming. So we switched to formula and it is going so much better, I feel like my son is happier and getting enough to eat finally and I am so relieved. I have my 6 week appointment next week and I am going to have to tell my midwife I am not breastfeeding so I can get the right birth control. It really seems silly but I'm so anxious to tell her because I feel like she is going to try and guilt me (I already have had feelings about being a bad mom for stopping). Has anyone else dealt with this kind of situation from a Healthcare provider?