Had a horrible time at the doctors office yesterday...don't know what's going on?

Okay, so yesterday was my 6 week check up with my doctor after having a baby. It was going fine even when I was told I was going to get a PAP. Usually those things freak me out really bad because the last one I had the doctor (totally different doctor this time thank God) was really rude and short with me and had me in tears even before the whole PAP thing got started so then on the way home from the appointment I was crying. So anyways, I wasn't nervous because there are more painful and uncomfortable things right? lol Anyways, when the exam started, I was in so much pain!! She could hardly get the opener thinger (don't know the name for it sorry but the thing they insert to open up your ) in! She noticed I was really constricted and there was a lot of discharge (Sorry if TMI). I had noticed the more discharge but I normally have a lot when ovulating and I should be getting my period here again soon so I didn't think anything of it. She felt horrible because I was in so much pain. I couldn't relax at all and she hurried through the PAP and mentioned that she thinks from the looks of things I had Bacterial Vaginitis or something along those lines but she had to wait until the lab results came back. I looked up Bacterial Vaginitis and I don't have STDs or anything like that and I don't have any of the symptoms that they said and they said only a certain percentage don't have any symptoms. But I got a phone call from my OB nurse who had the lab results in from testing for that and said that I didn't have anything and that everything was normal but they were still waiting for the rest of the normal PAP results which have always been normal for me so I'm not worried at all. But I just don't understand how I was so unbearably tight down there. I haven't had with my husband yet since I delivered and had with him a few days before I went into labor and didn't have a l birth but was dilated all the way. Could that have something to do with why I was so tight down there? I really don't know what's going on. I got the go ahead on having again but I'm so nervous that it's going to be unbearably painful that I won't be able to go through with it!