delayed period or pregnancy?

okay ladies, i was on the lowest hormone bc pill for 3 years and my husband and i decided i would stop taking it. this is my first month off of it. my last period was april 1-5. i SHOULDVE started my period around the 30th/1st. i still haven't gotten it. i know that coming off of birth control can cause a delayed period, but i also know that it's a really really easy time to get pregnant. i've been feeling so nauseous almost everyday, 4 days ago i puked and then felt fine and then a few hours later puked and then felt fine and it was just random sickness and nausea. my nipples feel a little more sensitive than normal, but not a whole lot. i've also been peeing literally like every 20 minutes. i haven't drank anything since being awake today and i've already had to pee 4 times. i've taken 2 hpt's and they were both negative, but i know that sometimes there might not be enough hcg yet. basically i'm just really confused and curious as to what you guys think it sounds like? i know you're not doctors and can't tell me exactly what it is, but just opinions from experiences would be appreciated!! (i've also included screenshots of my log if it helps at all)