Can’t afford to go to the emergency room

I’m currently high risk due to a history of cardiomyopathy. I’m in my first trimester, I’ve been on a leave of absence from work due to not being able to do anything (brush my teeth, shower or even lay down) without shortness of breath and chest pain. I’ve developed new symptoms like dark spots in my eyes and headaches but I’m too scared to go to the ER and leave my fiancé with everything to take care of. All of the bills and housework has been on him and we have 3 other children. I hate to make him miss work, handle the bills and do everything else. He says it’s okay but if I’m admitted to the hospital he can’t work and bills will get outta hand. I feel useless and like such a burden. I can’t even make myself food from feeling so weak.