Confused

I don't think I'm prego because my cycle came on but I still feel sick like I have to throw up... still tired and was having cramps for like a week.... I slept all day the whole day after we did the do and the cramps came after and now my cycle... do I still need to test or is that normal? I never felt this way before... it's usually not one of my af symptoms (the feeling sick part) ..... what should I do... am I worrying for nothing because my af is here?