Miscarriage at 5wks in March and now trying to conceive again seems impossible with that fear of losing it again or not being able to conceive

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We’ve been trying to have another but seems impossible now. I’ve monitored ovulating and taken home tests and all tests come back to nothing. My SO thinks it’s me not being able to conceive anymore although we are only 32. I just keep thinking to myself if my body is producing healthy hormones still because we have sex whenever we want and especially during my peak days. I currently breastfeed my 1 yr old and take prenatal vitamins and other vitamins to help. Is there something I’m doing wrong or something I’m missing? Please any information is valuable to me