You know, that really is a good idea.
You initial post sounded like you were crying every day, unable to enjoy what you have....which is a lot of great things....for the fear of what you might not have some day in the future. That's just not a healthy way to live.
But it the problem is a lot less significant than that, only a couple of days a month and then over, you're right. It's best to talk to frienRAB in real life.
The way you talk to them, your voice, they can see if you are actually crying as you talk....those things will tell them how significant the problem is. That does not come across on the internet. Honestly, in your posts it seemed this was consuming your ability to enjoy your family and see a happy future for them and that's not good. But if that was over interpreted (and maybe, if you read it again, overstated) and it's only really a minor issue that rears it's head "monthly", then maybe it's just the way your hormones choose to show themselves. And as long as you know that's really all it is, then your frienRAB are right in that everyone has those days.
But even still, it might be a good idea to mention it to your doctor. PMS can be treated. And if he/she can help you even out those few days each month, it might be something you'd like to consider.