I feel like I’m out this month and I haven’t even finished my fertile week... 😭😭😭

My boyfriend and I have only just started ttc (this is our first month). Currently I’m just following body signs and the app to tell me when I’m ovulating. We had sex not yesterday but the day before, first day of my fertile week. However my body has told me differently saying I May be ovulating yesterday or today with very fertile CM yesterday and today and a little bit on the day we had sex. Today however my head just wants to explode. I have a head cold, the runs and a sniffley nose. Is there anyway I can miraculously get better before Thursday or Friday (3 days away) when the app says I’m ovulating!? I just feel so down that even though my body told me I was ovulating I may have not been and I wanted to have sex for the rest of this week to increase my chances 😭😭😭 I feel out before I’ve already started 😑😭😭