Pregnant before marriage

As-salamu alaykum I have question to ask a scholar its personal I couldn’t ask anyone please reply to me I did major sin may Allha forgive me I got pregnant last year and we decided to not tell anybody me and my boyfriend we got married everyone was happy the family friends now I had the baby but I have this feelings that there’s something wrong with my marriage do we have to do another Meher and how should we do plz help