My boyfriend blocked me for no reason?

I told my boyfriend I had bad cramps ( because I'm on my period currently) I texted him this on WhatsApp and on regular text message (iMessage) cause I wasn't sure if my texts messages are going through or not and then out of nowhere he told me to leave him alone and he said he was depressed so l asked him why and he said that he was going to block me over this and that I'm not his therapist. So I apologized for asking and telling him that I was on my period because he said that he didn't care.. he's just being unnecessarily mean to me. Can I get advice on this? I asked him to unblock me on another messaging app GroupMe because I didn't even do anything. Him and I are 22 if this helps. And I know this guy personally from high school but him and I are long distance because of college.
My boyfriend blocked me for no reason?
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