Should I stay with my boyfriend who can't accept my past?

I have been in relationship with my boyfriend for the past 11 months..and its gonna be a year in this April.I love him so much that I am in a point that I can't let him leave me nor I can leave him.He gives me the support and love I always wished for.There is nothing more than him that I want in my life.But the issue is with my past. When he proposed me itself, I told the harsh truth about my past relationship,that I am not virgin like him and I got pregnant with my ex .And since he is virgin he can't accept the fact that I lost my virginity.In the beginning of the relationship he has told me if he is virgin, he wants his girl also to be virgin.If he was not a virgin then this won't be a problem for him. He can't understand nor he can't accept that I lost my virginity and got pregnant.There is a twist to this story also.In the beginning I told him that I have got pregnant in my past, but after that I told him I am not sure because my test results I saw was negative. I am not sure whether I got pregnant or not, my doctor is telling me its all my hallucinations.I have been dealing with anxiety since 7 years and I am having treatment.My padt is not affecting me now but it is affecting him making him overthink a lot and I can't see him suffer like this.Before I came to his life,he was telling his family that he don't want marriage and he will be single for life.I know that my past is not smthg that every boy can accept.But he told me that he can't accept my past ever in this life nor he can't stop overthinking about it.And because of this he wants to leave me even though he loves me.He literally told me that he can fight for me and be in a relationship with me but with the condition that I have to see him suffer.I told him to see my doctor who can better explain my past to him.But it's been months I have been telling him this and still now he didn't took an effort to see my doc.I can't even imagine spending a moment of my life with him.I found my home in him.But my concern is that is he loving me like I do.If he loves me that much he will stick on to that one reason to be with me and he is not doing.Other than the fact that he can't accept my past and it is making him suffer,everything between us is good.Should we consult a relationship expert.He told me that it is better to end this now rather than getting married in future and face problems because of this and fighting with each other and finally getting a divorce.He might be correct if this issue is not resolved now,it might create problems in the longrun.But the thing is I can't change my past and whatever happened to me was not my fault.My past has become a curse in my current relationship.I can assure that my past will not create any issue in our marriage if he can accept it somehow and not overthink about it.If we continue this relationship he have to live with the overthinking about my past for my happiness.Otherwise also if we both breakup I will suffer more because of it and he too will also suffer because he left me.He is telling that the problem is with him that he can't accept my past.What should I do to fix this problem and make him accept my past and understand my love for him?