I need advice 😩

So my man and I have been together going on 5 years in December, we have a 2 year old together and have been trying for a couple of months for baby #2. I’ve always had trust issues, even before we were together and I was with someone else (a lot of stuff happened to me as a child) anyways, I use to be super crazy and had a tracking device on his phone and had an app that I could all his incoming and outgoing calls ( I know crazy 😒) I’m not proud of it but it happened. So anyways I never found anything so after a year of having it, I deleted it because he found out and said if I can’t trust him then we shouldn’t be together, fast forward to a few months later and I’ve been finding myself going through his phone again and calling / texting / FaceTiming him A LOT just to see where he is or what he’s doing. So tonight he finally had a break down and told me if I couldn’t trust him after almost 5 years that maybe we shouldn’t try for another baby, I know he’s right and I know I need to trust him more but as crazy as it seems I don’t know how? Please no rude comments as I know where my mistakes fall I just need some advice, I don’t want to loose him or my family 😩😩