Not sure what to think??

Last month may, I had two periods. first week of the month ,one the last week of the month. in the second one, last week of the month, was my biggest this year.. I had to think back to when I had so much pain and it was a whole year ago.

I bled for 5 days and it quit finally for two days and then I started spotting lightly for the next 5 days. Now I'm 2-4 days late. I went to Branson over the weekend and me and my husband did have a few drinks, each night and I am a smoker. I know I should have quit already. But I've slowed down. Not sure if I'm experiencing any pain or symptoms of any sort. I have been sick for over a week with a sinus infection.