Some BBT Below Coverline with BFP

Tiffany

Natural Cycles says ovulation was on CD 28 (but missing temps) and my first positive test was on Wednesday. Between CD 28 and the bfp, about half of my temps were below the coverline, then today there was a significant (+1°) increase. Should I just stop temping now that I had a bfp? I had a beta HCG done yesterday and it was 27, will probably go back Monday to see how HCG progressing. I had a chemical in December so it’s hard not to over analyze everything. Thank you for your input :)