Erectile issues with husband

My Dh and I have been married 10 years he is older than me in his mid 40's and well we have the yours mine ours (Brady bunch) with the baby turning 4 we did have issue with getting pregnant before as in had tubes tied and then had reversed and also lost about 125 lbs so there was no issues. We went through 4 months of fertility treatment with IUI and also did a round IVF all unsuccessful then when relaxed we got pregnant but now the 3 years later he says he loves me but has issue with erection. We went through testing for all blood levels and they are within levels (testosterone is low but with in normal limits) so referred to the urologist now. I use essential oils cause my libido is low (mentally) and seems to help but he is so against it and we would like another child but afraid that he says he loves me in that fashion but not able to perform has caused a lot of stress anyone have any solutions or ideas to help? I am so at a lost