Negatory on pregnancy! So what’s next??

I’m sure y’all have seen some of my recent posts. I’m NOT pregnant according to tests, blood test included. Which is fine, we’re not trying nor do we want or need another baby at this time. (Hell, I have THREE and they’re all finally in school… 😂) anyway, I’m still having some outrageous nausea, my boobs hurt to even brush up against… idk if it’s stress, birth control, or what… I go to my OBGYN Tuesday because of these issues. What else do you think we should be looking for? I’m also having a lot of back pain, some minor cramps right beside my hips into my side… also peeing a lot. (Which could also be my bladder or kidneys healing from the UTI I’ve been fighting for the past month.) I did go to a urologist today! He did a renal ultrasound to look at my bladder and kidneys. My primary also did a culture, that came back good today. (Urologist is doing another!) I’m just wanting to get rid of this feeling. I’m sick of feeling sick! 🥺 also, they did a CBC at my primary, and I am a little bit anemic. 🙄 I wonder, could a vitamin deficiency make me feel like this too?? I know my iron is low, but I’m not sure of everything else. 🤔 so many questions!!