My college choice has ruined my friendships

Hey ladies I need advice,

So I’m a senior and I’m going away to college. I’m moving 4 hours away from home. I have had 2 best friends for as long as I can remember, but recently I have felt very left out of my friend group. I am being left out of them hanging out, wether it is together or with a group of our other friends (But I’m never invited) I’ve asked my mom what she thinks about and she says that she believes it’s their way of coping with me leaving. It has really truly been hurting my confidence and my not to be cheesy but my heart. It feels like they don’t want to be my friend at all anymore.

What do you guys think? Should I confront them about it or just move on with my life? I don’t want to loose them as friends forever but honestly that’s what it feels like they what.

Please help.