I have been tracking for three years. Always short cycles but regular.

Since getting Covid19 in June they have been super short and I’m worried I am not ovulating. I Saul my OB/GYN yesterday and he gave me the typical lab work to have it seven days past ovulation and again next cycle on cycle day three. I started with BBT again since I haven’t been doing it for months because I didn’t need to I use OPK and I just know whenever I’m ovulating. My last cycle was only 17 days and the one prior was only 20 days. So I am trying to figure out ovulation for this cycle so I can get labs drawn at the proper time. Mine anti-inflammatories may be causing my temps to be low and my high water intake may be causing the OPK to be diluted. If anyone can look and tell me what they think I would greatly appreciate it. Thank you