42 years old, 3 years trying, naturally pregnant due October

Monica
I'm 42, will be 43 in May. We tried for 3 years. After months of tears we finally gave up.. Well, 3 months later it happened!! We are do October 15th... I have 3 grown kids, 26, 21, and 15.. I just started feeling sick 2 days ago, and extremely tired and lazy.. We are excited however, just wishing the sickness doesn't increase.. also feel out of breath just going to bathroom.. As if I ran a marathon, has any one felt that way? .. and I think this kid is like 5 pounds already.. I feel so huge but I shouldn't at 6 weeks.. Anyone feel the same??