Pregnancy symptoms do they come and go? Or stay?

Megan • Trying for our third! First baby a miscarriage, chemical then rainbow. Second baby 9 months of trying 4 with clomid. Hoping for a quick easy pregnancy for #3
Do they come and go? Are the constant? I had a miscarriage last time at 6 wks so even though I try not to I am analyzing every symptom. I had a lot of cramping pulling but it has seemed to subside but my back is killing me and I pee a lot sometimes and not as much other times. What are your experiences?