WBC count

Hi! Back in December I had some bloodwork done as I was feeling really spacey and brain foggy and exhausted. I had extremely low vitamin d (12.6) so My Dr put me on a weekly pill for that and I think that solved the fatigue issue almost 80% for me so far. I’m currently at 29 so almost normal again. But the bloodwork also came back with a slightly low wbc (3.7) and neutrophil (1.91) count. I was told to come back in a month to have it rechecked but most likely a cold or virus caused it. My daughter had been sick the past few weeks so I figured maybe I had it and just didn’t have symptoms. I got Covid a month later so had to reschedule it another month out since my wbc likely took another hit. Just got it done and my wbc is 3.9 and they didn’t check the neutrophils but I’m assuming it’s probably okay? My Dr said the neutrophil count isn’t needed since my wbc is now normal. I think I was expecting a bigger jump upwards since my usual wbcs over the years are usually about 5-7 so I don’t typically run low or borderline. I’m assuming since it’s trending upwards I am okay though? I don’t need my neutrophils rechecked? I guess just looking for some reassurance, I’ve had some issues lately with the doctors office messing up my bloodwork so having a hard time trusting them and will probably go to a new one next time for my annual. All the other blood cell results were normal on both tests. 27 year old female, 160 pounds, 5”6.