You are too early to detect an ectopic pregnancy
with symptoms since you had the IUD removed 25 days ago and should you conceive so soon, which is rare, symptoms usually develop at four weeks of pregnancy. The pain may be unrelated. Yet, to rule out, you can get a sonogram of the pelvis if possible in the trans-vaginal route after seeing a specialist for a proper clinical appraisal of your situation. A blood test
for pregnancy helps in the diagnosis. Hope this helps.