Pregnant?

I haven’t had sex in at least a month, maybe close to two. I’ve only had sex with one person so maybe that’s why I’m paranoid (?) but here’s the gist. I am known to have irregular periods, they are usually about 6 weeks apart and i have spotting in between. I am 16 now but I just got my period a little over a year ago so it is irregular. However, my period is currently 23 days late from the 4 week mark (a little longer than a week from what I’m used to) & my last period was very light and only lasted 4 days, when usually I have 6 day periods with the first two days being heavier. I am very bloated in my belly but in actuality I have lost 10 pounds. I’m having symptoms of PMSing for the last 2-3 days (bad bad cramps, emotional, heachaches) but my period is yet to come. I’m just so nervous that I’m pregnant. I’ve taken 2 tests, a couple days apart and they both clearly only had one line, indicating I was not pregnant. But I’m aware these aren’t always accurate. I’m so nervous. We ALWAYS used a condom, we checked for it breakage before & after & never noticed anything, & most of the time he would pull out too because we are very cautious. someone please tell me I’m just being paranoid.