Missing period?

So I’ve been on the pill (Lo loestrin fe) since October of last year and I’ve been having a normal period like clockwork up until last month. My last normal period was in May, I am sexually active & the only form of protection is the birth control. I spotted for three days in June but no normal period (5 days). I’ve taken several tests to see if I am pregnant and each of them come back negative, I’m starting to get more and more anxious/scared about not having a regular period. 😪😬🤯😭

(Note: tail end of May & all of June was v hectic with school and I wasn’t taking my pill at the same time everyday. I’ve since then been getting myself back on track hoping this will rectify the issue of my illusive period)

Would really love you beautiful babes input💕