SAHM & FTM in need of advice

Hello first time mommas! My little one is 5 months old and Im lucky enough to stay at home with her. Lately I've been feeling like my company is not wanted. Like Im not being invited to things that I could easily get a sitter for, or bring the baby along with. Im the first of my friends to have a baby (were almost 30 btw). Am I the only one that feels this way? or is the fact that I'm at home more making me feel this way beacuse im "bored"? I dont feel bored, my LO is keeping me plenty busy!