Blackberry curve won't send pictures anymore?

I’ve had my curve for about 10 months now (from verizon), I’ve been very happy with it but recently (past 2 months or so) I haven’t been able to send pictures to facebook at all. It starts sending but when I check if he goes through it has a red X next to it and never ends up going through. Is there something I’m doing wrong? What can I do to fix this? Any users that share this also? Thankyou for reading!