I had a couple of internals last year and have had two this pregnancy. None have been anything more than slightly uncomfortable, some I even barely felt at all. In one circumstance the mw asked me to cough as she inserted the probe which naturally made me laugh and helped break the ice a lot. I've never bled after any of them and they are reputed to be perfectly safe and won't damage the pregnancy.
In fact, after having had mine I found I was able to think about having
again as well, because if they can put that in and move it about without it doing any harm, then sure as eggs are eggs hubby can't do any harm lol!!