I'm so like that!!!
Same as Little_mrs tho... means I have to get out of my pj pants which are really the only comfy thing right now!!!! LOL.

I think it's normal to be a little anti-social because it's hard getting out and about the bigger you get, and you just want to keep to yourself and get everything ready!
Just watch it though, you don't want to completely retreat from everyone, still try to get out a little bit and maybe only avoid people who are not close fam n friends? And maybe explain to the people you do see that you are not feeling so social lately so you may need space every now and then.