So my fiance noticed a few different things such as me peeing constantly a random huge blue vein on…

So my fiance noticed a few different things such as me peeing constantly a random huge blue vein on my nipple really awkward craving & me sleeping constantly. also back pain and my belly is poking out a little more then usual with swollen ankles. I've taken numerous pregnancy tests but I also have very inregular periods. any ideas 😕 I'm kinda stressing out about it..