A missed miscarriage?

Okay, so I'm pregnant, or I was pregnant. I'm a few weeks along. Probably three or four. I made the decision to have an abortion as mentioned in my last post. However, in attempt to avoid the procedure, I took supposed miscarriage-inducing supplements such as vitamin c, black cohosh, and cinnamon. I only did this for a couple days, as it gave me a major headache. But a few days ago, I noticed that my breasts felt heavy, but not near as sore and tender. I don't feel bloated anymore. I just don't feel pregnant anymore. Is this normal? Have I had a missed miscarriage? Should I continue with my appointment with Planned Parenthood?