Confused??

So in early may I had what they called a chemical pregnancy I had 4 positive test and I even started to get the bloat well I ended up blood clotting and when they did an ultrasound there was no baby 2weeks later. Well fast forward to may 30th we had An appointment because I was feeling really crampy and had another positive test well they tested my progesterone and hcg they said that my progesterone and hcg was so high that they wanted to see if I was pregnant with twins they did an ultrasound and still nothing. I have been bloated bad having low back and side aches and being so so tired. But yet still not pregnant they told me to take the birth control pill for some estrogen for a week and to come back for a check but nothing has changed. Has anyone experienced this?? I wanna try for baby #2 but idk if this with complicate things.