Help on unknown illness?

Throughout 3 to 4 weeks, I’ve been getting very..specific symptoms of some illness, but can’t find a specific answer. I hate going to the doctor unless I start vomiting blood practically, and so want to try to find a possible explanation first. Symptoms include:

1. Always feeling full or bloated. Even if I didn’t eat.

2. Very sensitive to temperature. Especially heat. Even a small bit of heat/humidity makes me sweat profusely now.

3. Being very picky with food, and becoming full very quickly.

4. All around just having very little appetite.

5. When I move my head, it feels..odd. Like a VERY mild dizzy feeling.

6. Feeling the urge to vomit every so often. Not really nauseous, but like my stomach is irritated and my brain wants to force vomiting to fix it. When I do puke, the feeling leaves. Especially during the morning.

7. Vomiting bile only. Green in color, if that matters.

It doesn’t have to be an on-the-nose answer, but if anyone has a serious answer as to what it might be, I’d be very thankful. I’m very anxious.