Extra long period, and now no period at all

Ok, so the last time I remember my period being normal was during the last week of April 2018. But then something very weird happened. Literally 4 days later, I got my period again. And that continued for almost the entire month of May. It was heavy, but sometimes during the month it would switch to light and then switch back to heavy again.

I am sexually active, and I did have sex the night before the 1-month long period started. But I’m pretty positive I couldn’t be pregnant because my S.O. did not ejaculate. I don’t take any hormonal birth control, but we use condums and we know how to use them correctly.

Is it possible that because my last period was so long, that I might skip my period? That’s what I’ve been thinking. As to why I had such a long period in the first place, I do not know.

Guys I’m getting so much anxiety about this. Glow says that I’m 8 days late on a period, but maybe the app can’t take into account the really weird cycle I had last month. I already know I need to see a doctor so don’t tell me that. I just need to know if this has happened to anyone else. Please let me know.