low ef and pregnant

Years ago my ef was 30 now it is 45. The dilima is that i am a few weeks pregnant and one cardio says that under special attention i would be fine. Another/ second opinion, states I would not make it. Right now im just numb with going back and forth on deciding what i should do and or compare my situation to simalar situations.  They said my risk is 25-30%. Palpations and fluid retinion would be deadly. Im soooo very distraught and wished i knew of similar situations that may have turned out ok or not unfortunately.  I also have anxiety which dosent help. Also I seen the high risk maternal dr and she said she has seen worse ej survive a pregnancy, but she has to follow the cardiologist leads. Please can someone provide some insite???****###