I'm just on 50mg as well. I don't really consider myself as having been "trying" at this point cause I knew when I came off the pill that until I had a cycle there was no point putting pressure on ourselves - especially if we have a potentially long ttc road ahead. Still don't have a cycle so this month on clomid will be our first month where there is any chance and we will be "trying".
I'm not at all worried about twins, actually would be super excited to get two! we would manage and it may mean I never have to worry about fertility treatment again :-)
Have a great week