3 months ago I switched my birth control,
My partner has came in me quite a few times at the begininning of this month,
I am two weeks to my perios, and I am having spotting, and feel nausious at times,
I was just wondering if there was a chance that I am pregnant?

Every time you have sex, even with birth control, pregnancy is a possibility.

You'll have to wait and see. If you miss your period than try a home pregnancy test.

This would come to my second question.
With birth control, my period comes every time I stop taking my pill.
So how do I really no if I am pregnant? Do a test even if I get my period?

All right, 3 months ago I started a new pill,
My partner came in me quite a few times this month,
It is 2 weeks to my period, and I have spotting, and nausia.
Now every time I stop ym birth control, I get my period, even if I stop it in the middle of the month, how are you suppose to know if you are pregnant if you get your period every time you stop taking your pills?

If you get your period it's unlikely that you're pregnant.

Some women do experience bleeding throughout their pregnancy, but it isn't a period. Your body stops menstruating once an egg is fertilized, implants, and pregnancy begins.

If you get your period then it's really unlikely that you're pregnant, but, if you feel the need to test anyway, just to put your mind at ease, than there's really no reason not to.

Answered here;

https://www.askmehelpdesk.com/pregnancy-new-motherhood/could-possibly-pregnant-546788.html

Please don't start multiple threads for the same issue. Any follow up information can be posted in your original thread. It makes it easier for those responding to get the whole picture.

I'll ask the mods to merge your threads.

Thank you.