So I've been a stalked, harassed and emotionally and physically abused by this 'man' It's going to be long and I apologise.
I met him in June 2011, I was 18 he told me he was 27. we had sex and were seeing each other since then. I found out I was pregnant In August 2011.
One day I went to bed and he followed me up shortly after. I didn't want to have sex but he continued to touch me and eventually rape me. I said nothing, just rolled over and went to sleep. The next day we got into an argument and I told him that the night before I didn't want to have sex with him and his response was "fine, I'll never have sex with you again" He honestly believes he didn't rape me.
Once I told him in August that I was done he's made my life hell. I contacted the police in October 2011 regarding the ongoing harassment and stalking I was getting from him, I was asked has he ever had sex with you without your permission and I said "I was in bed and he would come up and touch me without my permission and have sex with me" they told me "due to it being months ago it wasn't rape and there was nothing they could do about it. It was best I just forget it" this was said multiple times so I stopped mentioning it.
He is my DS's father, He has been physically abusive, emotional abusive to me, he stalks and harasses me.
The police have been useless, they go round and warn him verbally a month or so goes by and this starts again, same patten for years! May 14 he's served with a harassment warning notice, nearly 3 years later! because I kicked up a fuss, this was after being told they don't exist and him taking me to court for access and it being refused.
They assured me that he wouldn't be allowed to post things online about me as he had been telling people what car I drive, where I live etc. I moved 5 months later and a month passes and I'm oblivious to the fact he found me 
his best friends (the one who cornered me outside a shop pressed me for questions about my son and told him everything so he could ring me and tourment me a day after nearly dying giving birth and discharging myself because he said he'd take him) brother is now my next door neighbour Yet he still allowed to post to facebook "if she thinks she can move to avoid be served, she can think again. I know a lot of people" They know when I leave, come home, when I fucking sneeze.
I've asked to be moved again, the 4th time in as many years. A worker came out from my HA, she looked through everything and was shocked to see how I'd been let down so many times. The police have failed me, my own solicitor has failed me (told me previously I couldn't get a Non-Molestation order numerous times but apparently I could) She told me what he had done was historic rape, and they should never of told me that there is nothing they could of done as there was!
I'm applying for a non-molestation order now, due to his comments on Facebook, him sitting outside my home (my partner has seen him drive around and sit outside) and reporting me for benefit fraud maliciously.
My issue is do I now go to the police with this historic rape? The same police who told me that it wasn't rape and that they couldn't do anything about it. The same people who let me down all them years ago. He will deny it, he will say he's done nothing wrong and I know they'll take a statement from me, from him and then let him go as there will be no evidence is it worth it? I can still hear myself utter them words "i didn't even want to have sex with you" but I'm wondering if there is any point? I haven't told anyone after them police officers apart from this lady who came out Wednesday.
So I guess what I'm really trying to work out is, if you were me, What would you do? honestly. It may help me decide I don't know