Trust issues

I've had some issues with my man in the past when we weren't officially together and now that we are I still get so down about the things from the past. I don't want the past to ruin us. I love him so much but my heart hurts.

He's been amazing and great and hasn't done anything wrong since we worked our shit out and got back together. How can I move on from the past and not let it effect our relationship now?

when I'm sad about the past he's supportive and feels bad but I know that If I always bring it up it will cause some problems.

Plus I get so insecure and so much anxiety wondering what he's doing when I'm not with Him.

I'm out of town right now and he calls and facetimes and texts and tells me where he's going. We text all day and night. I want to just move forward and not be stuck. But everytime I think of his past actions it makes me sick and wanna cry. Any advice?