feeling so lonely

I have a good support network around me with my family & boyfriend - but I just feel like pregnancy makes you so lonely. I've had a rough pregnancy and have a lot of health problems following on from this now at 29 weeks pregnant I've been on bed rest for the past four weeks and still the issues are getting worse. my boyfriend works a lot which is brilliant for us as he works so hard to give us the life he should and I would never fault him on that but when he gets in from work he goes to the gym and doesn't get back till late then we go to bed, I've been feeling so home sick too but no where feels like home, you certainly do loose a lot of friends when you get pregnanct but I didn't expect it too be so many. is anyone else feeling the same or am I being stupid? 

really appreciate some views as its really getting me down lately - feel like I'm bursting into tears all the time for no reason. 

thank you xx