plan B ? orrr...

Okay so my bf and I had sex on st Patrick's day and we didn't use protection but he pulled out .. I ended up getting my period the day after. 
I ended up having to tell my mom cause I got a uti. This is about a week and a half later.. she made me take plan B even though it was more then 72 hours. 
So I took the plan B last Tuesday and started getting the side effects about 4 days after taking the pill. 
It's been about 3 days and I'm still experiencing the side effects and I've been bleeding like it's my period for like 4 days even tho my period was like 2 weeks ago .. is this normal?? 
Also the side effects: nauseous, stomach pain, bloating, and even a panic attack? 
Can someone tell me if this is normal please