I would keep the pap appointment personally, you can bring up the soreness and pain from sex as well as the spotting. Then talk about everything you have concerns about physically and emotionally.
I'm so sorry that you're in a rough spot right now and can totally relate with getting sick of the whole ttcal roller coaster of emotions... but no matter what I think you'd be the best mother ever. It's not going to change that, but no matter when you get pregnant you're going to have different feelings, fears, anxieties than if you've never had a loss. It's not the same, the blissful ignorance is gone when it comes to pregnancy... so I hope that you can come to some peace with that internally. You're going to be a fabulous mother no matter what!