I haven't had any bowel movements to speak about even taking a laxative could this be serious?

Been evaluated yet?: Doctors define constipation as stools less frequently than once every 3-4 days. Patients feel they are "constipated" when passing hard or small volume stool, or they feel full & bloated. Had an x-ray to show you're not blocked? Do we know if your gut is sluggish or your rectum works correctly--these can be tested for. Sounds like its time to see a GI specialist for the correct treatment.

Investigate: Yes you should take it seriously. Though the commonest reason for this is what we call "functional idiopathic constipation" essentially a "lazy bowel" you need a colonoscopy to look for blockage, polyps etc. Once this is done, you should increase your fiber to 25 grams per day, drink 6-8 glasses of water and try a probiotic like Align every day. Prescription medications include Linzes/Amitiza