So scared now

My husband and I have been trying for about a year to have a baby. We had a chemical pregnancy in February. Now we are pregnant again and I'm almost 8 weeks (provided everything is going well.) but lately I've been doubting our decision to get pregnant. We're almost 20, are we growing up too fast? We were just married in March, should we have enjoyed more time as a married couple? Ugh 😓😭