Paraguard for 1 year. lmp in late september. no "real" period since then. very light 1-2 day spotting, cramping. neg pregnancy tests. is this normal?

If pregnancy test: negative then wait a week, then check another pregnancy test. If negative again, wait another week, check another pregnancy test. Don't convince yourself that you are not pregnant until you have had 3 negatives in 3 weeks and your period has returned. Then wait for period to reset itself, and if it doesn't, then see a healthcare provider.