Late period

Nicole
I havent started my period this month was supose to be the 19th threw the 24 and still nothing. No cramps but yesterday my breasts were kinda sensitive. Also i had mirana  removed dec 24th. Had a period dec 27th threw january 4th. Then had one january 22 through the 27th. Then i had one feb 19th through the 24th. Do u think im pregnant or just cause i had mirana removed? I took a dollar stor test on the 17th but it was negative instantly... Thanks a bunch.