missed periods

Sweet love
Have any of you ladies had a missed period. Ok usually very regular even though sometimes my cycle changes. February I didn't get any period until march. I have been getting my cycle around the 29th for 3 months straight and it hasn't showed up!! I hate having to think that I might be pregnant because I've had several disappointments. Ps. I've been feeling a little different towards my partner. Sex drive is not as it was before!! I've been feeling like I don't want to be around him have sex or anything! I never felt this way! 🙈I hope it's just the hormones!! Anyone been through this?