Things have changed idk if it’s me but

So me and my boyfriend have been dating for two months we knew each other before we were the best of friends super close. The last two weeks feels like things have changed. I would be over there almost every day now he doesn’t really even invite me over we just see each other on the weekends so I feel like things have changed. I will admit I have drawn back because I feel like I’m becoming clingy but he WAS the clingy one and I miss it. I feel like he’s not treating me like he was before and I have expressed this before, and it may just me being overdramatic and overthinking because my previous relationships. He hasn’t really show me anything such as I shouldn’t trust him but I just don’t I don’t know if it’s because previous relationships or if it’s my intuition. I don’t know what’s going on with me I’m starting to get on my own nerves at this point for example, he said he was gonna come see me yesterday, but his stomach started hurting literally right after we said this and he didn’t come. I thought it was me just being emotional because of hormones—because I’m on my period but I only get emotional like this the week before not actually on my period which is ending tomorrow and I still feel this way. I know when I’m in my head but I don’t know what’s going on, and I have expressed this to him but things just don’t feel the same and I can’t tell if I’m just in my head. I just been feeling so down in life, my job, my relationship and I would like to atleast find peace in my relationship.