5 days late.

I was on the patch for 4 months, I reached my patch off week November 29, then had my period from December 1st-7th. I was suppose to start the new set of patches December 6th. But I didn’t cause the patch was really messing with my weight and messing with my mental health. I have continued to have sex since. But the sex method has been withdrawl. No condoms of any sort. The next time I had sex after my period was December 8th, then sex on the 14th, 21st, 24th, and 28th. Around the 19th and 20th of December I was having terrible lower back pain resulting in cramping which has then disappeared since those days. I’ve never experienced it before. It a couple days after my ovulation which was the 16th supposedly. My breast are sore too. According to my calendar I was suppose to hit my period December 27th again. But it is now New Year’s <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>, I’m patch free still and I still don’t have a period. I have not tested yet do you think it’s a possibility that I may be pregnant. Do you think I should test if it hits the 2nd of Jan and i still have no period? Give me your thoughts I’m lost right now.