Curiouse vacectomey pregnancey?or hormomes from fibroids

Faith
So i have fibroids and my husband has had a vacectomey for over 6 years and i do have irregular periods,but this time im 18 days late ive been having many weird symptoms many like a pregnancey,even nausia and threw up one morning a few days ago,havent threw up since but have slight nausia occasionally since and really bad yesterday when i got over heated,my breast are tender ive had constipation gas bubbles but not much gas,burping like crazy(i do have ulcers and acid reflux)but usually from eating or drinking something,latley i wake up birping like crazy,i dont want to seem crazy and i feel like im bloated butni keep bloating and then unbloating,any help,i dont want to go to a doctor quiet yet because i dont want to be looked at like a crazy person,i also habe three ruptured disks ,my L3,L4,L5 and a uneven hip ,from neing hit by car so i do jabe back pain regurally so couldt tell if i was pregnant from back pains either,im stummped,ive had times where my bkdy has acted pregnant but not this major,i dont know if its my hormones screwing with me from fibroids or what