😔 26 weeks today.

I've been having a hard time latley, I lost my baby the day after finding out I was pregnant. I got pregnant to someone I knew but it was a one night stand, he doesn't know and I can't stop thinking about him. I just keep imagining me spending time with him & it's weird! 
I would have been 26 weeks & due on the 9th of April. Can anyone please give me some advice on moving on from this..