False allegations to DFCS?

I am having a panic attack. I need answers please. My stupid ex boyfriend who lives in my home still (because he hasnt moved out yet, i am about to have a baby and he pays bills) called DFCS on me and made a report with all kinds of allegations, such as I abuse him, Im possibly on drugs, I have a personality disorder and I am bipolar, my son hasnt had shots since he was born, and I have on the internet. Now let me start off by saying this: I have had my son updated on his shots, I have no history of mental illness and my medical records are clean, I am certainly not on any kind of drugs (I dont even take advil), I dont abuse the babydaddy (haha more like the other way around really), but I do have some on a private website from a couple years ago when I was more naiive and confused. Theres no way anyone could find it...unless my dumb ex gave them the website and the screen name I had for on there. So when DFCS came knocking, I denied all allegations and gave them numbers of references. They wanted people like my son's babysitters and for some reason my work phone number. Well it turns out that they have called the babysitters already (one is family and one is a close friend, they told me) and I know they didnt say anything bad about me at all. Should I be concerned about anything bad happening? I dont want my son or son on the way taken away. My one other concern is this. My son hasnt been to the doctor for regular checkups. His medicaid ended when he turned one and I havent been able to get it back yet. When he has been sick ( only once) I took him to the hospital for treatment. It was only a cold however, I still have yet to pay off that bill. I am a dedicated mother caught up in a horrible relationship in the process of ending and I need reurance. My son is my life. I have heard terrible things about how DFCS wants to take your kids from you and the social workers will lie and yadayayda...is this true? I mean, my house was ( and is all the time) very clean, my son has his own room that is very kept up, he is healthy and happy and they saw that... I live in a decent townhome, I dont live in the slum ghetto, I am very young (Im 19) but I am like I said a wonderful mother and Im sure of that. My insecurity lies in DFCS...do i need to be afraid? I mean, it would have to take a lot to get your kid taken away right?