Struggling after miscarriage

I found out I was pregnant may 27 and when I told the father he freaked out and told me to get an abortion and if I didn’t he wasn’t going to be there. I decided I wanted to keep the baby and then I started to bleed and I went to the ER twice and on June 21st it was confirmed I was having a miscarriage at 8 weeks. It’s been almost 2 months and I’m still devastated at the fact I lost him(I know it’s for the best but still hard) and lost my baby all within a month. I don’t know how to move on from this and just be happy. I’m so miserable and now someone In my family is trying to conceive and I’m happy for them but it makes me so upset. I’m just struggling a lot lately.