boyfriend acting weird at work rant

Maggie • 25🌞Mommy to💙Luca 12/31/13💙 Logan 02/14/17💙
My boyfriend worked in a different department in our office than me but he recently got promoted to supervisor in my department( I have a different supvisor as there are 3) Ever since, he's been a little distant. 
We do insurance claim adjustments and he is the most knowledgeable guy I know about it and when I started a new project for some hard claims I told him I had 2 that really needed some review before I work them. 
Here we are 4 days later and he hasn't helped but he was talking to me earlier about how he's been talking to every girl in my department and helping them and at their desks a lot to get some info about my department.
HELLO? You live with and are dating one of the best resources in our department! I could have helped him but instead he asks for links and spreadsheets that I have from other people. Idk.
I recently earned and got promoted to work at home agent which is a huge deal to earn and now I'm nervous because he honestly doesn't talk to me all day except lunch because we carpool and go get coffee... 
He has also had numbers in his phone and there are no names just numbers (only saw because his phone was on top of mine on the drive home and it lit but but I thought it was mine. And he quickly snatched it.) and he is friends with a lot of them on Facebook and they all have each other's personal numbers...
I feel like something is up but I have no proof. Just weird feelings... and when I start working from home later this month I'm nervous what he'll be up to... I'm almost 18 weeks pregnant with our son... 😞