Relationship anxiety/OCD? 23F 23M

My (23F) boyfriend (23M) and I have been together for almost 2 years. Ever since the relationship started, I have had intense anxiety about the future, if it’s going to end, whether I’m enough, whether he’s enough, what other people think, etc. Commitment milestones such as getting engaged, getting married, and having kids scares me a lot. My boyfriend doesn’t have these worries, and is very calm and reassuring. It scares me a little that he is so confident about me and our future. Some days are better than others, but I cannot get out of this intense anxious cycle that something bad is going to happen. I’ve been dumped suddenly in my previous two relationships, so that probably contributes to my anxiety, but I don’t know what to do. Is this normal? Will it ever get better? Any advice would be greatly appreciated. Thanks!