HELP! Should I tell me bf about my PCOS?

To give you a little background, I am currently 25 years old, 5’1”, and 105 lbs. Me and my boyfriend (who I recently started dating but have been talking to since February) use to hookup when we were 18 or 19 years old (before I knew I had PCOS).

Since knowing about my PCOS, pretty much all of my symptoms have gone away due to the medication I was put on to balance my hormones. With this also came unintentional weight loss, about 15-20 pounds. So, when we use to hookup in the past I weighted about 125 pounds.

Now to my question...... my bf keeps making comments like “where did you go” or “you need to eat more” or the one he uses most often “I’m trying to get you thick again”. He will literally shove food in my face, always in a joking matter, but it make me feel like I need to eat it even though I’m full. He is in very good shape himself. He works out every day and watches what he eats while I don’t work out at all and eat McDonald’s every day. I think he is under the impression that I am purposely not eating as much as him to stay this weight... but that’s not the case at all.

We got in a fight at dinner last night because I was done eating and he kept saying things like “you’re not gonna get thick unless you eat everything” and so on. I just wasn’t in the mood to laugh it off. Keep in mind the “instagram models” pictures he likes alwayssss have a huge ass, tiny waist, huge tits, and super toned legs and arms. So over time these comments have made me feel very insecure like I am not attractive enough for him bc I’m too thin. So instead of laughing this time I said “it would be nice to hear a compliment about my body instead of how you want to change it” and he sort of got an attitude and said he’s not saying it in a mean way that I just use to be thicker and something about “what a problem to have... most girls want to be thinner” blah blah blah. Basically ignoring my feelings completely. After I told him it makes me feel very insecure, he never apologized... I was on the verge of tears bc PCOS is a sensitive topic in general and I felt like I was being criticized for something I can’t control. I then told him that I can’t help that I have lost weight and how I’m not trying to and he asked “what would be the reason you can’t control it other than the amount of food you eat” and I literally couldn’t get the words out of my mouth. I became silent for the rest of the night bc I knew if I talked about it then I would cry. We were suppose to go see a movie after dinner and then stay at my place but instead he said he didn’t feel like going to the movies anymore and as soon as we got back to my apartment he left with no explanation instead of coming inside to talk about things.

Half of me feels as if I just would have told him what was going on none of this would have happened. But I’m scared to tell any guy about my PCOS bc I don’t want them to run away after reading about it on google or finding out I could potentially not be able to get pregnant.

Have you told your significant other? How did you do it? What did you say? How did they react?