Chemical? Scared...

I got my first positive on June 14th, 8 days before my period was supposed to come. I have taken 4 more since. I took three in one day, I know, obsessive but I just couldn't believe it. They were all faint lines. The next day I took a digital and it said pregnant. On the 18th, I took another First response and the line was darker. Later on that day, I started spotting. It was on the tp. Yesterday I was still spotting but only when I pushed the toilet paper up to check. I also had period like cramps... The feeling was identical to having your period at any second. I went in to get a blood test and will get my hcg levels today. I also have to go in tomorrow for another blood test and if my levels haven't increased by 60 percent then it probably is a chemical. Today I have less spotting but noticed a few small (very tiny) clots. The color of everything has been light brown. I've also had sore boobs through all of this and coincidentally they don't really hurt anymore. I'm starting to think the worst. I put a tampon in because I still have that feeling that my period is going to come. If I am still pregnant I would be three weeks but I guess from what I read, chemicals are very common. Today the spotting seems lighter but I am losing hope. I won't find out for sure until Monday with both tests, unless I get my AF on Sunday when it's due. While I'm waiting I thought id reach out to those who had similar symptoms or experienced a chemical before? Does this sound normal for early pregnancy or is this on track for what I'm dreading?