Pregnant or not

Ok so my husband removed my iud two months ago ( yes I should have had the doctor do it I know ) and that went really well anyways had first period after that then this month became very sick have had nausea all month it seems along with a very sensitive abdomin and strange food cravings however urine tests say negative. I'm on day 33 of cycle and no period in sight or symptoms of to speak of any thoughts?