Cold feet

I’m starting to have second thoughts about being pregnant I’m 10 weeks 1 day and I’m so scared I’m 20 and I’m starting to have second thoughts it was unplanned and my family is super excited about it and so is my boyfriend but I can’t seem to get happy about it it scares me that I’m throwing my life away or I’ll miss out on things and I just don’t know what to do I want to be happy about it but I just can’t everything about it scares me my body changing I’m so moody and sad all the time any advice ?