Period late for 3 days. Because of that?

Hello, I am 3 days late of my period which is unusual since I am never late, I also feel dry down there. I have cramps, headache and back ache, pain in my inner thighs and as well as mood swings. I usually have these symptoms when I am about to have my period but now it is late. It is now Monday and I was supposed to have my period on Friday. On Wednesday I masturbated with sperm in my fingers but before that my partner and I wiped the cum away with tissue and it took me minutes after I touched the cum to masturbate. Is it because of that? Or is it because I had a very hard work out on Saturday that made me dizzy and nauseous. Please I am in panic and I really need some doctor's thoughts about this. Thank you for taking time in reading this. I'll be waiting for your reply.