Second guessing (need advices)

Hi! I just made this throwaway account because I wanna be sure no one founds this.

Ive been feeling extremely ill (head spinning everytime I move. Constant headaches that sometimes turn into migraines. Heart palpitations to name a few) this past 3 days and I think it might be because of an anxiety boost. Im not sure this is where its from but its my best best so heres the story.

About a week ago I started playing with someone on X box. The second time we played together we started flirting a bit. (I want to say right now that I never wanted a long distance relationship and Ive never even tried that whole thing never happened before.) Somehow I ended up falling in love with her personality and she fell in love with mine. We ended up falling asleep talking. Weve been talking and falling asleep on the mic everynight since. From the beginning, she wanted to travel to my country to visit. I didn't really thought of it seriously and thought it was really cute. Even though we live quite far from eachother i somehow really want it to work out.

Now here are some of the problems:

1. We both have poor self-esteem and I do believe she's good looking but I do know for a fact that she wont like me in real life even though she said she liked the pictures.

2. We both have anxiety but mine is paired with borderline personality disorder and hers is paired with bipolar and she tend to like to try to push my limit.

3. Yesterday she said that she planned to drive here with her friend to meet me in 3-4 weeks and its starting to go way to fast for me.

4. I have both commitment and abandonment issues.

5. I already have insomnia and I have not been able to sleep well this past week.

I dont want to hurt her or break her heart so I dont say anything but I dont like where this is going and I dont know what to do at this point. I feel like giving up on everything and just kill myself at this point. If anyone has any tips on how I could feel better please let me know.