I don't want to be heartbroken

I'm so darn scared.

[i will be referring to my gf as gf for privacy reasons]

i was casually texting my girlfriend (on Pinterest)and before I went to bed I texted her that I missed her and she replied the way she usually does"I miss you too". but when I woke up the next morning and went to text her good morning I found that she blocked me and deleted all of the posts that she made that had me in them. 

i was shocked and confused so I made an alt account and texted her through there to try and see why but instead of her answering it was her mother. her mom told me I did nothing wrong and that gf wasn't doing well and that she would text me later. so two days go by and nothing. i get very worried very fast and I overthink a lot but from the context of the situation and the fact that one of her friends from school told me they were in the process of planning to go to a concert, it seemed like gf was trying to ghost me. and it broke me, I cried a lot that day.

through my sadness I sent another text asking why she blocked me and if we were breaking up. she gave a sad and confusing reply, when I asked what was wrong she left me on read. 

she is still online and is saving things to her boards. 

I'm so scared, I love her so much and have been trying to be the best and most supportive, kind, and loving boyfriend possible. I'm scared that's not enough, that I'm not good enough 

I don't want to be alone again, I know the pain of it and I fear it.