Condom help!

So recently my husband and I decided to quit trying for a baby and work on getting our bodies healthy first. I don't want to get on any birth control so we decided on condoms! I've never used them before with him and it's been so difficult trying to find the right fit! I bought the trojan ultra thin and they were way too tight. So I got the trojan magnum large. And they're still too tight. is there any ladies that have a man with a wide penis that can help me with the right size? I've been doing tons of research and measured him myself but just wondering if there was anyone who had this problem and which condoms were best for y'all?? or am i better off just keep on buying bigger ones and trying them?His girth is 6 inches! help please!