need advice about going to court

when I was 17 I was woken up by my auntys boyfriend's brother having sex with me, I thought I was dreaming and panicked when I realised I wasn't and that it was real, took me 2 weeks to tell my mam and she rang the police straight away, I'm now 20 and still waiting to go to court, I'm absolutely shitting myself in case they don't have enough evidence as all I've got is text messages I sent to my friend that night as she was telling me to leave but I couldn't as I had left my trainers next door (happened at my friend at the times house and she lived in a bedsit and my aunty lived next door) I don't speak to my aunty or that friend no more and I'm worried in case they don't turn up to help me get him put behind bars, or even deny it happened even though the lad text my aubty after she asked what happened and he admitted it but laughing as it was a joke, I've had a baby since with my partner but I'm so worried they will have that against me, can anyone give me advice on how to try not be scared about going to court etc, I'll be going in january😔