Am I At High Risk Of Pregnancy After Unprotected Sex While On YAZ And Taking Ella?

Hi there, I m a 25yo female on YAZ birth control pill since Feb 2022 for PCOS. I am currently on my 11th pack. To provide some context, here s the sequence of events that happened: 1 Dec - 4 Dec: I was scheduled to take the placebo pills, but instead, I immediately started a new pack of active pills. In other words, I skipped my placebo pills. 5 Dec: unprotected sex, while on active pill 6 Dec: unprotected sex, while on active pill 7 Dec: I was still on active pill. I started spotting (light). 9 Dec: unprotected sex, while on active pill 10 Dec: unprotected sex, while on active pill 7 Dec - 11 Dec: spotting continued, with light/moderate bleeding 12 Dec: I started taking placebo pills from the previous pack (because the bleeding didn t stop for 5 days, from 7 Dec to 11 Dec). 13 Dec: Bleeding started to increased from light to moderate. Now, it is of fresh red blood color. 14 Dec: I had type 6 / 7 diarrhea. 15 Dec : Last day of placebo pill. Still bleeding moderately, fresh red blood. Took Ella (emergency contraceptive pill) - still within 120 hours/5days after unprotected sex 16 Dec: started new pack of Yaz birth control pills as instructed. 17 Dec onwards: Bleeding stopped. 23 Dec night: I have headache from tight neck and tightness around the eyes (I often have this). This is accompanied by nausea and I m afraid that it is associated with pregnancy or is it associated with the headache? Nausea and headache is mild but the more i think about it, the worse it gets and i can t fall asleep. Questions: 1. Am I at high risk of pregnancy? 2. Is my nausea associated with pregnancy or headache? 3. When should I take a pregnancy test to know if Ella worked?