This is not about who is against you or for you (in fact it's not really about you at all).

The people who respond tend to be pro-kid, not anti-"whichever parent". That's a simplistic view, but it's the truth

So, file for divorce, request temporary custody of the child. You don't need an attorney for this; simply call the court house and they will tell you which forms you need. There will be a filing fee but if your income is low enough you may be able to get that waived.

I have to ask - why haven't you been able to file for a restraining order yourself? The forms are very easy to fill out, and you don't need an attorney.

As far as the child's medicine - really simple. Pack some medicine. Take it to Dad's. Knock on door, turn right back around and get back in your car. Heck, if you're generally afraid for yourself, you don't even have to do that. Pack some in a box and mail it to Dad's address, overnight.