Irregular periods after mirena removal.

Savannah
Hi everyone! I recently got my mirena removed and 2 days later started my period and it lasted a week or over. I was supposed to start my period Tuesday if I'm counting 28 days after the first day of my period. It is now Sunday and I haven't even felt my period coming yet. Me and my husband did have sex but he used to pull out method and it worked for us for 2 years. Could I be pregnant or do you think I'm still trying to get back to normal?