flu or pregnant?

My husband left April 24 for deployment so obviously we had a very active weekend 😶 and I did have a period in may but lately I been sick with the what seems like the flu and I've never felt this shitty in my life! I recall my mother in law saying she thought she had the flu then found out she was pregnant. Is this possible I don't believe it. I know many of you are going to say do a pregnancy test but I'm deployed now I left two weeks after my husband at a different location and I really don't want to go and find out I am and get sent back to the states when this is a 2 month training course (it's extra money we're saving) so I just want to know am I overthinking it or not ?