NEED YOUR HELP!

Ma
Okay, here's my problem. For a week before I started af I was having this horrible cold. Then af started and I had this cold the entire time, af lasted 4-5 days. Now that af is over I still have this cold. 3 weeks total. Nothing I take works or helps at all. I have been cramping off and on for 3 weeks. No cramps during af. Now I have a headache accompanied by this horrible cold that I can't get rid of. We have been ttc for 18 months. why would I be having this in the middle of summer? Should I take a test?