can you control if you cum

so I was all turned om yesterday during, but then we changed positions and I kept thinking my one year old was going to catch us (he was awake) and I started to worry that it was going to put me in labor again (not the last time but the time before I had some preterm labor shortly after but he came in me that time) anyhow I went dry and he started to get offended he kept telling me to cum I told him I can't control that and he said yes you can, I really think the fact that it took me so long to and I didn't want him stimulating me with his fingers which was uncomfortable for some reason hurt him making him think I didn't want him but that's not true it's been killing me to not have sex as often as normal or like we normally do (much harder) is it normal that I couldn't make myself wet?