I last had sex in Feb actually Feb 14th to be exact. My period has always been irregular and I last got one In April and nothing since. I haven't really felt like myself lately either but to me there doesn't seem to be any signs of being pregnant no weight gain nothing... I have very bad insomnia though that started about a month ago. I can be up all night and then up all throughout that day and then same with the night and then when I finally go to bed I sleep either all day or for a few hours and then do it all over again. I am also very easily annoyed with little things these days and have had some bad headaches. My hair is also thinning as well so if I'm not pregnant any ideas of what could be wrong with me? Any help would be great =) Thanks

And when you took one or more home pregnancy tests what did they show.

What did your doctor say when you went in for a check up for these issues

Actually haven't taken any because I haven't felt the need to as I am not having any symptoms that would make me think I am and I actually had a check up back in the beginning of May but it was a normal physical nothing related to any of this and all the symptoms I'm having aka the insomnia hair loss etc just started recently about 4 maybe 5 weeks ago

Sound like you have a problem, maybe your thyroid. You need to see a doctor to determine what exactly your problem is.