Feeling so bad

My mother in law made me feel so bad about my cosleeping . First of all she thinks my baby should be sleeping in the crib in the other room( after i told her that’d be unsafe and inconvenient seeing as how I’m breastfeeding and my baby is only 5 weeks) . Then recently my baby has been sleeping in the bed with me and my husband . My husband goes to the bottom of the bed , baby goes in the middle and then I’m on the side but I’m a very light sleeper . I feel more comfortable with her in the bed because 1. It’s more convenient for feedings 2. I can monitor her more if she spits up, has gas (she’s been having gas problems recently) etc and 3. She will not sleep in the pack in play recently . My mother in law says I’m crazy and that “ baby has no choice on where she sleeps “ but she’s not there when baby can’t get a good nights rest ( but mind you, her babies used to sleep in a Car seat overnight so she could sleep). Any opinions on this ? Also, if she is in the bed where she’s right next to me , she sleeps on her stomach sometimes ( i know she’s little but she already lifts her head up, inches away sometimes, tosses head , and rolls on side ). If she’s in her pack and play which is right next to our bed as well, i won’t put her on her stomach , only when she’s in the bed where i know I’m right there . I’m a first time mom, so I’m just looking for more opinions. I know my mom put all of us on ours backs and same with my sister and my best friends kids, i might be overreacting but she just makes me feel so bad