Pregnant after miscarriage?

Amanda
Hi all. Here's my situation. Six weeks ago today I had a miscarriage at six weeks along and had an hcg level of 0 three weeks ago today... I am feeling pregnant again. Boobs are really sore, light cramping, very tired, slight nausea, also an elevated temp (spiking like last time I found out I was pregnant) took a pregnancy test and it was negative. Just wondering if anyone has some advice or personal experience with the situation? TIA
Update: I've been spotting for 3 days now- pink- very light. Minimal cramping... so confused 😫