I too had the same feelings when deciding whether or not I was ready to TTC#2 after miscarrying my first pregnancy. In the end, it came down to one question. What am I willing to give to be a mother? The answer was anything. We are now TTC.
Best of luck, and this is just my opinion, but I think if it's truly what you desire, then try, and try again. It would be extremely hard looking back and wondering if you would've succeeded if you tried a few more times. I think harder than suffering another loss. But that's just my feelings. Only you can decide what's right for you.