Trigger warning. Is this rape?

For everyone saying this is spam I swear on my life it isn’t. I. Need. Help. I posted on multiple pages in order to get the opinions of as many people as possible. Hello, my name is Maddie and I’m 13. This is going to be a long post so settle in. My brother is currently 16, and we have always had a fairly good relationship. About 6 months ago he asked me if he has a normal sized penis... I found such a question to be odd, but answered him and went to my room. After about 15 minutes he knocked on my door and I said he could come in. He asked me to suck his dick. I said I didn’t want to, but he continued to ask until I finally just said yes. We did the deed, and he said “thanks” and left me alone for the rest of the day. Did I technically consent? He continued doing this about once every other week, until about two weeks ago. We were doing our usual routine, (which I don’t enjoy, and begrudgingly said yes to), when he tells me to take my pants off. I figured it would make things end faster if he had something to look at but bout was I wrong. He started doing me doggy style, anally. I was in so so so much pain, but I was frozen. Is this rape? I never get any pleasure out of this, and he always has to push me in order for me to say yes. Any advice would be nice, I’m just so confused. Thanks.