Going crazy!

So yesterday I was feeling off and decided to buy first response hpt when I got home in the afternoon I tested it out and got the first picture but I couldn't help myself so before I went to bed I took another one which is the second one. Then just to confirm it I took another one this morning the third one. AF isn't due until Monday and I have this horrible fear that it will show and that I will just have chemical pregnancy. I want to be soo excited but have this horrible anxiety that it won't be true and I think I would be so devastated. Any encouraging words would be appreciated bc I think I have gone crazy! I have been waiting for this moment for a while and would hate it to not be true!