Social anxiety disorder??

Social anxiety disorder,well yesterday was a eye opener for me..I was scared to go outside not just scared but terrified, this been Going on a lot in these past years I feel if someone is watching me every where I go I've never been a people person what so ever and hate new things....so I tried to tell my boyfriend since we been together 3years on how I've been feeling we would have this conversation alot but just that I act weird around people like get super nervous.. but anyway so I tell him I was scared to go outside like i got dressed up did my hair and makeup to go outside which I don't go without him and I couldn't I feel so out if place and scared ....so I tell him about me scared and basically panicking today so I can have someone to talk to he flips saying you don't have this your not like this you are okay...so by now I'm crying telling him this is what's wrong with me after looked up the reason why I'm like this...I just feel like he didn't care and I'm serious I've known for year this not normal he knows I have no one to talk to I feel like he don't know me anymore