[Rant] [Relationships] I feel like an asshole, what do I do?

I'm F15 and my gf is F16 (I've known her for several years, have dated her for 4-5 months), lately I've been giving her more affection than usual, and I thought I was overthinking that she didn't like it or that I've been giving her too much, but when I asked her if I have been doing too much, she told me "Yeah it's been a bit much". I apologized, and asked her if she wanted me to tone it down (just to be sure), and she replied "Yes please". Lately I've been really sad I've made her feel that way, and I'm wondering what constitutes as crossing that line to her. I later asked her if she wanted to talk about boundaries but I have gotten no response so far. I am worried she's upset with me and I want to know what I can to do make it up to her. For some insight I'm extra stressed (since I've been in a past abusive relationship, and I don't want to hurt her that same way), words of affirmation, physical touch, and acts of service are my main love language and I didn't realize I was being too much with it.

EDIT: I talked with her and I don't feel like I can give her affection. Physical affection is mainly off the table, but I can't help myself from being sad. We talked and she doesn't like physical touch and I'll respect that, it just hurts. I'm not sure how else to really show my affection, but I feel awful for getting sad over this. I've been feeling awful the entire day.