Feeling different ?

So today I've been feeling annoyed all day! I'm a SAHM to my 2 year old daughter, while my fiancé works all day! I woke up this morning feeling great, then since the days gone on I've been getting more annoyed at every little thing, my daughter, my fiancé, my house when usually I'm good! What is happening! I hate it! I feel miserable and it's not due to any reason! Anyone else feeling like this??