OK I normally have heavy periods but my last period was pretty light I also normally eat often but latey ly haven't been hungry I feel like my stomach is getting harder/tighter I have also been nauseated could I be pregnant?

Have you taken a pregnancy test?

Yes and it was invalid the two times I have taken them

First have you been having sex ? Have to have sex to be pregnant.

Next it most likely would be way ( way) to early to test. Normally the light period is for a few reasons in pregnancy ( or of course can just be a light period)

If you had sex and it was close to the date of the period, you can have a light period. Then it may be two or three weeks before the test will show up correctly. You may or may even be easier to just wait till next month and see if you get your next period, if you don't, then the test will be much more correct.

Also always do it, the very first thing in the morning with the first urine of the day for best results

Yes I have been having sex and the condom broke
I had sex tow days before my period.
And I'm suppose to have my next on in about a week from tomorrow.
My boyfriend thinks I am because I have been nauseated and irritable

And he has been wanting a baby for a while now

Nauseated and irritable can be the flu also. But just have to wait.

Did not mean anything about the sex, but we get some people come here ask can they be pregnant with this sign or that, then after about 20 posts state they never had sex yet

Oh OK

Thank you