So scared

I have been ttc for 5 years, had two rounds of ivf, one chemical pregnancy and they haven’t found any apparent issues. Just started my period last tues with it being extremely heavy for 2 days and spotting for the last 5. Took a pregnancy test yesterday as my period only lasts 4 days normally and I don’t get spotting and it was positive. Went to the dr to confirm and take bloods as I’m worried it might be another chemical pregnancy and waiting results but took a second test this morning and it’s darker. Anyone have heavy bleeding in any of their pregnancies and it turned out ok? Also had cramping all day today not painful but just there.