Feeling lonely­čśö

I feel like my boyfriend has been ignoring me a lot lately. He's not active on social media so I can't tell if he's doing other things. It's been almost three weeks since we last had a conversation and I really miss him. It's starting to take an emotional toll on me though. I feel very sad and frustrated and lonely. I can't recall doing anything to upset him or give him a reason to ignore me. We're in a LDR btw.