Feel down and lonely 😢😪

Does anyone ever just feel so alone? Or lonely? I have a great husband wonderful children who I love ❤️ so much I only have one friend but I'm the kind of person who would rather have one amazing friend then loads of people you see once in a while and can't really talk to or be your true self around. I live 100's of miles away from my family but don't really have any relationship with them other than my big sister. We are also expecting our last baby bean. Currently in the second trimester. There is always someone around at home but yet I still feel sad alone/lonely like I have no-one to talk to or depend on could this just be pregnancy hormones? It only starts about 6-10 weeks ago. Guess I just felt like I had to tell someone as I don't think my husband would fully understand. It's also my birthday in 2 days and I'm normally really excited and love my birthday 🎉 this time it's making me feel really down. Sorry to dribble on really just looking for some advice or guidance tia