TTC and chemical pregnancy pls help

Alyssa

I’ve tried 2 times for a baby and each time I had a chemical pregnancy or at least what I thought to be one.the last “chemical pregnancy “ I had was the day I “turned 7 weeks” the reason I’m saying this is because I don’t know. I had 8 positive tests and when I started bleeding I suspected miscarriage.I went to the hospital bcs I was puking and passing out.they told me I wasn’t pregnant which was weird to me.I showed the drs the tests I’d taken and they were also confused.they told me they weren’t specialists so they didn’t know.I never had a follow up bcs I was so embarrassed.anyone have any ideas what this could be?is it a chemical pregnancy?any tips to conceive with reoccurring chemical pregnancy?please help